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Let’s face it: inflammation has a bad reputation. Much of it is well-deserved. After all, long-term inflammation contributes to chronic illnesses and deaths. If you just relied on headlines for health information, you might think that stamping out inflammation would eliminate cardiovascular disease, cancer, dementia, and perhaps aging itself. Unfortunately, that’s not true.

Still, our understanding of how chronic inflammation can impair health has expanded dramatically in recent years. And with this understanding come three common questions: Could I have inflammation without knowing it? How can I find out if I do? Are there tests for inflammation? Indeed, there are.

Testing for inflammation

A number of well-established tests to detect inflammation are commonly used in medical care. But it’s important to note these tests can’t distinguish between acute inflammation, which might develop with a cold, pneumonia, or an injury, and the more damaging chronic inflammation that may accompany diabetes, obesity, or an autoimmune disease, among other conditions. Understanding the difference between acute and chronic inflammation is important.

These are four of the most common tests for inflammation:

• Erythrocyte sedimentation rate (sed rate or ESR). This test measures how fast red blood cells settle to the bottom of a vertical tube of blood. When inflammation is present the red blood cells fall faster, as higher amounts of proteins in the blood make those cells clump together. While ranges vary by lab, a normal result is typically 20 mm/hr or less, while a value over 100 mm/hr is quite high.
• C-reactive protein (CRP). This protein made in the liver tends to rise when inflammation is present. A normal value is less than 3 mg/L. A value over 3 mg/L is often used to identify an increased risk of cardiovascular disease, but bodywide inflammation can make CRP rise to 100 mg/L or more.
• Ferritin. This is a blood protein that reflects the amount of iron stored in the body. It’s most often ordered to evaluate whether an anemic person is iron-deficient, in which case ferritin levels are low. Or, if there is too much iron in the body, ferritin levels may be high. But ferritin levels also rise when inflammation is present. Normal results vary by lab and tend to be a bit higher in men, but a typical normal range is 20 to 200 mcg/L.
• Fibrinogen. While this protein is most commonly measured to evaluate the status of the blood clotting system, its levels tend to rise when inflammation is present. A normal fibrinogen level is 200 to 400 mg/dL.

Are tests for inflammation useful?

In certain situations, tests to measure inflammation can be quite helpful.

• Diagnosing an inflammatory condition. One example of this is a rare condition called giant cell arteritis, in which the ESR is nearly always elevated. If symptoms such as new, severe headache and jaw pain suggest that a person may have this disease, an elevated ESR can increase the suspicion that the disease is present, while a normal ESR argues against this diagnosis.
• Monitoring an inflammatory condition. When someone has rheumatoid arthritis, for example, ESR or CRP (or both tests) help determine how active the disease is and how well treatment is working.

None of these tests is perfect. Sometimes false negative results occur when inflammation actually is present. False positive results may occur when abnormal test results suggest inflammation even when none is present.

Should you be routinely tested for inflammation?

Currently, tests of inflammation are not a part of routine medical care for all adults, and expert guidelines do not recommend them.

CRP testing to assess cardiac risk is encouraged to help decide whether preventive treatment is appropriate for some people (such as those with a risk of a heart attack that is intermediate — that is, neither high nor low). However, evidence suggests that CRP testing adds relatively little to assessment using standard risk factors, such as a history of hypertension, diabetes, smoking, high cholesterol, and positive family history of heart disease.

So far, only one group I know of recommends routine testing for inflammation for all without a specific reason: companies selling inflammation tests directly to consumers.

Inflammation may be silent — so why not test?

It’s true that chronic inflammation may not cause specific symptoms. But looking for evidence of inflammation through a blood test without any sense of why it might be there is much less helpful than having routine healthcare that screens for common causes of silent inflammation, including

• excess weight
• diabetes
• cardiovascular disease (including heart attacks and stroke)
• hepatitis C and other chronic infections
• autoimmune disease.

Standard medical evaluation for most of these conditions does not require testing for inflammation. And your medical team can recommend the right treatments if you do have one of these conditions.

The bottom line

Testing for inflammation has its place in medical evaluation and in monitoring certain health conditions, such as rheumatoid arthritis. But it’s not clearly helpful as a routine test for everyone. A better approach is to adopt healthy habits and get routine medical care that can identify and treat the conditions that contribute to harmful inflammation.

About the Author

Robert H. Shmerling, MD, Senior Faculty Editor, Harvard Health Publishing

Dr. Robert H. Shmerling is the former clinical chief of the division of rheumatology at Beth Israel Deaconess Medical Center (BIDMC), and is a current member of the corresponding faculty in medicine at Harvard Medical School. … See Full Bio View all posts by Robert H. Shmerling, MD

As a cisgender woman with long hair and a closet full of dresses, I can count on one hand the number of times I’ve been misgendered by being called “he” or “sir.” Cisgender means I was assigned female at birth and identify as a woman. For people who are transgender and/or nonbinary (TNB), with a different gender identity than their assigned sex at birth, being misgendered may be a daily occurrence.

Why does misgendering matter?

Imagine a scenario in which you are called the wrong pronoun or honorific — for example Mr., Ms., or Mrs. — multiple times a day. It might happen in person, over the phone, or via email. Each time it happens, you must decide whether it is worth it to correct that person or easier to let it go. Imagine that you are repeatedly confronted with this experience and the decision of whether or not to correct it throughout the day — every day. As we know from research, and as I’ve also heard from the TNB people I know, this is both exhausting and demoralizing. When people are misgendered, they feel invalidated and unseen. When this happens daily, it becomes a burden that can negatively impact their mental health and their ability to function in the world.

If you are a cisgender person, you can lighten this burden for TNB people by using the right names, pronouns, and honorifics to refer to them, apologizing when you misgender someone, and correcting other people when they misgender someone.

How do you use the correct name, pronouns, and honorifics?

It’s simple: follow the person’s lead, or ask them. The name, pronouns, and honorifics that a person chooses to use for themselves communicate to others how they want to be seen and acknowledged. Using the correct terms for someone is a sign of respect and recognition that you see them as they see themselves.

If you knew someone previously as one gender and now they use a different name, pronouns, or honorifics, it can be hard to remember to use the right terms, especially if the person is gender-fluid and changes their pronouns more often. It can also be challenging to adjust to using gender-neutral pronouns like they and them, neopronouns like ze and zir, and unfamiliar honorifics, such as Mx (pronounced “mix”). But using the right terms is critically important for supporting and respecting TNB people.

A few tips and tools

• Try not to make assumptions about a person’s name, pronouns, or honorifics based on how they look. The only way to know for sure what terms a person uses is to ask them in private (“What pronouns do you use?”). Asking someone in front of other people may unintentionally put them on the spot to disclose their identity to new people. You can ask anyone — cisgender or TNB — their name, pronouns, or honorifics.
• Once you know what terms a person uses, the best way to make sure that you use the correct ones is to practice (this tool can help). Practice when they are in the room and when they are not in the room. Practice before you know you will see someone. Practice with others in your life: your cisgender friends, your spouse, your pet, your child. In our household, my wife and I try to use gender-neutral pronouns to refer to our preschooler’s toys and dolls so that we can practice using them ourselves. We even change the pronouns of characters in books that we read as another way to practice.
• Another tip for remembering to use the correct name, pronouns, and honorifics is to pause before you speak. When we are stressed or busy, we are more likely to misgender people. Try to pause for a beat before you speak to make sure you are using the right terms to refer to someone. Similarly, reread emails before you send them to make sure you are not misgendering someone.
• Be patient as you learn to use new terms and pronouns. It gets easier with practice and may become second nature over time.

How to apologize for misgendering someone

Misgendering will happen. What’s most important is how you handle it when it does. The best way to handle misgendering someone who is present is to apologize and try harder next time (“I’m sorry, I meant [correct name/pronoun/honorific]”). Keep your apology brief so that it doesn’t become about you and your mistake.

If you are corrected by someone else, try not to be defensive. Instead, simply respond with a thank you and a correction (“Oh, thank you — I’ll email [correct name/pronoun] about that”). This is an important step, even if the misgendered person is not present, so you can practice and so others can learn from your example. Any time you misgender someone, practice so you can do better next time.

How to correct misgendering when you hear or see it

As a cisgender colleague and supervisor to numerous TNB people, many of whom are nonbinary and use they/them pronouns, I often find myself in situations where I need to correct misgendering. I might say something like “I noticed you used she to refer to that person. Just to let you know, they use they/them pronouns.” Or I might write a note in a Zoom chat or in an email, “Just a friendly reminder that this person uses they/them pronouns.” Stepping forward this way lessens the burden of correcting misgendering for TNB people. It also models to others that a correction can be done in a friendly way, and is important for respecting and including TNB people.

How to use gender-neutral language and normalize pronouns

One way to avoid misgendering is to use gender neutral language. Here are some examples:

• Instead of “boys and girls” or “ladies and gentlemen,” say “everyone.”
• Instead of “fireman” or “policeman,” say “firefighter” or “police officer.”
• Instead of “hey guys,” say “hey everyone” or “hey all.”

Try to pay attention to your language and find ways to switch to gender-neutral terms.

You can be mindful of your own pronouns and help other people be mindful by normalizing displays of pronouns. Here are some ways that I make my own pronouns (she/her) visible to others:

• I list my pronouns in my email signature, in my Zoom name, and on the title page of presentations.
• I wear a pronoun pin at work.
• I introduce myself with my pronouns.

These actions signal to others that I am thinking about pronouns,  and am aware that people may use different pronouns than might be expected from their appearance.

You may still make mistakes, but it’s important to keep practicing and trying to use the right terms! By using the correct names, pronouns, and honorifics to refer to people, apologizing when you misgender someone, and correcting other people when they misgender, you can support and respect the TNB people around you. This helps create a more inclusive world for everyone.

About the Author

Sabra L. Katz-Wise, PhD, Contributor

Sabra L. Katz-Wise, PhD (she/her) is an assistant professor in adolescent/young adult medicine at Boston Children’s Hospital, in pediatrics at Harvard Medical School, and in social and behavioral sciences at the Harvard T.H. Chan School of … See Full Bio View all posts by Sabra L. Katz-Wise, PhD

By now, you’ve probably heard that there is a monkeypox outbreak traveling around the globe. Cases have spread far and wide, including in the US, Canada, Europe, and Australia. It’s the largest outbreak ever recorded outside of western and central Africa, where monkeypox is common.

But controlling this outbreak demands preventive measures, such as avoiding close contact with people who have the illness and vaccination. One method of vaccination, called ring vaccination, has worked well in the past to contain smallpox and Ebola outbreaks. It may be effective for monkeypox as well.

How can monkeypox be contained?

According to the Centers for Disease Control and Prevention (CDC) and the World Health Organization, monkeypox is unlikely to become a pandemic. At this time, the threat to the general public is not high. The focus is on identifying possible cases and containing the outbreak as soon as possible.

Three important steps can help stop this outbreak:

1. Recognize early symptoms

• Usually, early symptoms are flulike, including fever, fatigue, headache, and enlarged lymph nodes.
• A rash appears a few days later, changing over a week or two from small flat spots to tiny blisters similar to chickenpox, then to larger, pus-filled blisters.
• The rash often starts on the face and then appears on the palms, arms, legs, and other parts of the body. If monkeypox is spread by sexual contact, the rash may show up first on or near the genitals.

2. Take steps to stop the spread

• Monkeypox spreads through respiratory droplets or by contact with fluid from skin sores.
•  Anyone who has been diagnosed with monkeypox, or who suspects they might have it, should avoid close contact with others. Once the sores scab over, the infected person is no longer contagious.
• Health care workers and other caregivers should wear standard infection control gear, including gloves and a mask.
• In the current outbreak, many cases began with sores in the genital and rectal areas among men who have sex with men, so doctors suspect sexual contact spread the infection. As a result, experts are encouraging abstinence when monkeypox is suspected or confirmed.

3. Use vaccination to help break the chain

• Monkeypox is closely related to smallpox. People who received a smallpox vaccine in the past may have some protection from monkeypox. (The US smallpox vaccination program was discontinued in 1972, and smallpox was declared eradicated worldwide in 1980.)
• Stockpiled smallpox vaccinations and newer vaccines that can be used for monkeypox or smallpox are also available.

Ring vaccination

Monkeypox differs from the virus that causes COVID-19. People with monkeypox usually have symptoms when they’re contagious, and the number of infected persons is usually limited.

This means it’s possible to vaccinate a “ring” of people around them rather than vaccinating an entire population. This selective approach is called ring vaccination.

Ring vaccination has been used successfully to contain smallpox and Ebola outbreaks. It may come in handy for monkeypox as well. Here’s how it works:

• As soon as a case of monkeypox is suspected or confirmed, the patient and their close contacts are interviewed to identify possible exposures.
• Vaccination is offered to all close contacts.
• Vaccination is also offered to those who had close contact with the infected person’s contacts.

Ideally, people should be vaccinated within four days of exposure.

This approach requires widespread awareness of monkeypox, rapid isolation of suspected cases, and an efficient contact tracing system. And of course, vaccines must be available whenever and wherever new cases arise.

Are the vaccines used for monkeypox effective?

According to the CDC, the smallpox vaccine is 85% effective against monkeypox.

While a newer vaccine (JYNNEOS) directed against monkeypox and smallpox has only been tested for effectiveness in animals, it is also expected to be highly effective in humans.

Of course, vaccinations can only work if people are willing to receive them. We’ll learn more about this as more people are offered the option for vaccination.

Are the vaccines used for monkeypox safe?

As with most vaccines, the most common side effects include

• sore or itchy arm at the site of the injection
• mild allergic reactions
• mild fever or fatigue.

Fortunately, more severe side effects, such as significant allergic reactions, are rare.

The bottom line

In light of the current monkeypox outbreak, you may soon be hearing more about ring vaccination. Then again, if appropriate measures are taken to prevent its spread, this outbreak may soon be over. Either way, this won’t be the last time an unusual virus shows up seemingly out of the blue in unexpected places. Climate change, shrinking animal habitats, rising global animal trade, and increasing international travel mean that it’s only a matter of time before this happens again.

About the Author

Robert H. Shmerling, MD, Senior Faculty Editor, Harvard Health Publishing

Dr. Robert H. Shmerling is the former clinical chief of the division of rheumatology at Beth Israel Deaconess Medical Center (BIDMC), and is a current member of the corresponding faculty in medicine at Harvard Medical School. … See Full Bio View all posts by Robert H. Shmerling, MD

In the aftermath of the killing of 19 children and two adults in an elementary school in Uvalde, Texas, there is a lot of discussion — and argument — about what we should do to prevent shootings like this from happening.

In the midst of all the back and forth between banning guns and arming teachers, there is an important question that cannot be lost: what does it do to a generation of children to grow up knowing that there is nowhere they are safe?

There is increasing research that growing up amidst violence, poverty, abuse, chronic stress, or even chronic unpredictability affects the brains and bodies of children in ways that can be permanent. These adverse childhood experiences put the body on high alert, engaging the flight-or-fight responses of the body in an ongoing way. This increases the risk of depression, anxiety, and substance abuse, but it does so much more: the stress on the body increases the risk of cancer, heart disease, chronic disease, chronic pain, and even shortens the lifespan. The stress on the brain can literally change how it is formed and wired.

Long-term effects on a generation

Think for a moment about what this could mean: an entire generation could be forever damaged in ways we cannot change. The ramifications, not just for their well-being but for future generations and our work force and health care system, are staggering: stress like this can be passed on, and affects parenting.

As we talk about arming teachers and increasing armed police at schools, it is important to remember that research shows that the more guns, the higher the risk of homicide. It’s also important to remember that many children die every year from unintentional shootings in the home. In fact, guns have overtaken motor vehicle accidents as the leading cause of death in children. The idea of “arming the good guys” is an understandable response to horrible events like Uvalde, Parkland, and Sandy Hook, but the data would suggest that it may not be the most successful one. Violence begets violence, and guns aren’t reliably used the way we want them to be.

It’s not just guns, of course. There are other stressors, like poverty, community violence, child abuse, racism and all the other forms of intolerance, and lack of access to health care and mental health care. The pandemic has likely forever altered this generation in ways we cannot change, too.

The communities our children are growing up in and the world they are growing up in are increasingly becoming scary places. If we care about our children, if we care about our future, we need to stop fighting among ourselves and come together to create solutions that support the health and well-being of children, families, and communities. We need to nurture our children, not terrify them.

About the Author

Claire McCarthy, MD, Senior Faculty Editor, Harvard Health Publishing

Claire McCarthy, MD, is a primary care pediatrician at Boston Children’s Hospital, and an assistant professor of pediatrics at Harvard Medical School. In addition to being a senior faculty editor for Harvard Health Publishing, Dr. McCarthy … See Full Bio View all posts by Claire McCarthy, MD

When the trademark throbbing from a migraine finally lifts, the relief is profound. But for many people regularly stricken with these potentially debilitating headaches, their distress isn’t over just because the pain ends. Instead, a distinct phase of migraine called the postdrome leaves them feeling achy, weary, dazed, and confused — symptoms eerily similar to another affliction altogether.

Dubbed the “migraine hangover,” this constellation of post-headache symptoms is remarkably common, following up to 80% of migraine attacks, according to research published in Neurology. Scientists are increasingly turning their focus to this previously underrecognized component of migraine, according to Dr. Paul Rizzoli, clinical director of the Graham Headache Center at Brigham and Women’s Faulkner Hospital.

“Not knowing it’s an accepted part of migraine, patients come up with some creative ways to tell us about their postdrome symptoms — they feel washed out, their head feels hollow, or they feel like they have a hangover but weren’t even drinking,” Dr. Rizzoli explains. “Until recent years, science hadn’t paid attention to this facet of the syndrome, but it’s a natural progression from focusing on the problem as a whole.”

The four phases of migraine

The typical migraine can be a wretched experience, with stabbing head pain joined by nausea, brain fog, and extreme sensitivity to light and sound, among other symptoms. Nearly 16% of Americans are affected by migraines, which strike women at nearly twice the rate as men. Severe headaches are also one of the top reasons for emergency room visits.

Spanning hours to days, migraine headaches can include four clear phases, each with its own set of symptoms. The pre-pain prodrome and aura phases may include various visual changes, extremes of irritability, difficulty speaking, or numbness and tingling, while the headache itself can feel like a drill is working its way through the skull.

Lingering migraine symptoms: The hangover

After that ordeal, one to two days of postdrome symptoms may sound tame by comparison, Dr. Rizzoli says. But the lingering fogginess, exhaustion, and stiff neck can feel just as disabling as the headache that came before. Since migraine is believed to act as a sort of electrical storm activating neurons in the brain, it’s possible that migraine hangover results from “some circuits being electrically or neurochemically exhausted,” Dr. Rizzoli says. “It just takes time for the brain to return to normal function, or even replace some chemicals that have been depleted in the process.”

But much is still unknown about migraine postdrome, he adds, and research has found no consistent association between factors such as the type of migraine medication taken and duration of any subsequent hangover.

Tips to ease a migraine hangover

Following these steps regularly may help you ward off lingering symptoms after a migraine:

• Drink plenty of water.
• Practice good headache hygiene by maintaining regular eating and sleeping patterns and easing stress.
• If possible, try to lighten your load for next 24 hours after the headache pain ends.
• Stop taking pain medicine once the headache is gone.

For migraine hangover sufferers so distracted by their inability to return to normal activities even after migraine pain lifts, physicians sometimes prescribe medications typically meant for conditions such as memory loss, depression, or seizures. While they may differ from the usual drugs used to treat migraine, some of these medicines have been observed to help postdrome syndrome or act as a preventive for headache.

“Think of the headache you just had like you’ve run a marathon or done some other stressing activity,” Dr. Rizzoli says. “Your body needs to recover, which is not the same as staying in bed with the lights off. Ease up, but stay functional.”

About the Author

Maureen Salamon, Executive Editor, Harvard Women's Health Watch

Maureen Salamon is executive editor of Harvard Women’s Health Watch. She began her career as a newspaper reporter and later covered health and medicine for a wide variety of websites, magazines, and hospitals. Her work has … See Full Bio View all posts by Maureen Salamon

As of June 2022, 37 US states have passed medical cannabis laws and 19 states have legalized recreational cannabis. Cannabis has proven beneficial for a range of conditions such as childhood seizure disorders, nausea, vomiting, and loss of appetite in people with HIV/AIDs.

In the meantime, a new generation of cannabis products has exploded onto the scene, driven by marketing that fuels a multibillion-dollar industry. The average content of THC (tetra-9-tetrahydrocannabinol, the psychoactive and potentially addictive chemical in cannabis) in smoked whole-plant products has risen from 1% to 4% in the 1970s to 15% to 30% from today’s cannabis dispensaries. Edibles and vapes may contain even higher concentrations of THC.

While public perception that cannabis is a harmless substance is growing, the long-term benefits and risks of cannabis use remain unclear. However, one consistent pattern of research has emerged: heavy long-term cannabis use can impact midlife cognition.

New research on cannabis use and cognition in midlife

Recent research published in The American Journal of Psychiatry closely followed nearly 1,000 individuals in New Zealand from age 3 to age 45 to understand the impact of cannabis use on brain function. The research team discovered that individuals who used cannabis long-term (for several years or more) and heavily (at least weekly, though a majority in their study used more than four times a week) exhibited impairments across several domains of cognition.

Long-term cannabis users’ IQs declined by 5.5 points on average from childhood, and there were deficits in learning and processing speed compared to people that did not use cannabis. The more frequently an individual used cannabis, the greater the resulting cognitive impairment, suggesting a potential causative link.

The study also found that people who knew these long-term cannabis users well observed that they had developed memory and attention problems. The above findings persisted even when the study authors controlled for factors such as dependence on other drugs, childhood socioeconomic status, or baseline childhood intelligence.

The impact of cannabis on cognitive impairment was greater than that of alcohol or tobacco use. Long-term cannabis users also had smaller hippocampi (the region of the brain responsible for learning and memory). Interestingly, individuals who used cannabis less than once a week with no history of developing dependence did not have cannabis-related cognitive deficits. This suggests there is a range of recreational use that may not lead to long-term cognitive issues.

More studies are needed on cannabis use and brain health

The new research is just one of several studies suggesting there is a link between long-term heavy cannabis use and cognition. Still, future studies are needed to establish causation and explore how long-term cannabis use might impact the risk of developing dementia, since midlife cognitive impairment is associated with higher rates of dementia.

What should you do if you experience cognitive effects of cannabis?

Some people who consume cannabis long-term may develop brain fog, lowered motivation, difficulty with learning, or difficulty with attention. Symptoms are typically reversible, though using products with higher THC content may increase risk of developing cognitive symptoms.

Consider the following if you are experiencing cannabis-related cognitive symptoms:

• Try a slow taper. Gradually decrease the potency (THC content) of cannabis you use or how frequently you use it over several weeks, especially if you have a history of cannabis withdrawal.
• Work with your doctor. Be open with your doctor about your cognitive symptoms, as other medical or psychiatric factors may be at play. Your doctor can also help you navigate a cannabis taper safely, and potentially more comfortably, using other supportive means. Unfortunately, most patients are not comfortable talking with their doctors about cannabis use.
• Give it time. It may take up to a month before you experience improvements after reducing your dose, as cannabis can remain in the body for two to four weeks.
• Try objective cognitive tracking. Using an app or objective test such as the mini-mental status exam to track your brain function may be more accurate than self-observation. Your mental health provider may be able to assist with administering intermittent cognitive assessments.
• Consider alternative strategies. Brain function is not static, like eye color or the number of toes on our feet. Aerobic exercise and engaging in mindfulness, meditation, and psychotherapy may improve long-term cognition.

Cannabis is an exciting yet controversial topic that has drawn both hype and skepticism. It is important for individuals and healthcare professionals to place emphasis on research studies and not on speculation or personal stories. Emerging studies suggesting the connection between long-term heavy use of cannabis and neurocognition should raise concern for policymakers, providers, and patients.

About the Authors

Kevin Hill, MD, MHS, Contributor

Dr. Kevin Hill is director of addiction psychiatry at Beth Israel Deaconess Medical Center, and an associate professor of psychiatry at Harvard Medical School. He earned a master’s in health science at the Robert Wood Johnson … See Full Bio View all posts by Kevin Hill, MD, MHS

Michael Hsu, MD, Guest Contributor

Dr. Michael Hsu is a resident psychiatrist and is currently the chief resident of outpatient psychiatry at Brigham and Women's Hospital, a teaching hospital of Harvard Medical School. After graduating from the University of Pennsylvania with … See Full Bio View all posts by Michael Hsu, MD

Let’s not kid ourselves: the pandemic is still with us, despite how it may sometimes seem.

Increasingly, people are going back to work in person. Schools reopened this spring. And mask mandates are history in most parts of the US. In many places, case rates are falling and deaths due to COVID-19 have become uncommon. For many, life now closely resembles pre-pandemic normalcy. So, what do you need to know about where we are now?

Not so fast: COVID remains a big problem

The virus is still very much with us, not behind us. According to the CDC, in the US there are nearly 100,000 new cases (likely an underestimate) and around 300 deaths each day due to COVID as of this writing. Despite this, more and more people are paying less and less attention.

That could be a big mistake. With summer travel season here and some dire warnings about fall and winter, it’s worth stepping back, taking a deep breath, and reassessing the situation.

Here are responses to five questions I’ve been hearing lately.

1. I haven’t gotten COVID by now. So, do I still need a vaccine?

Yes, indeed! Vaccination and boosters are the best way to avoid a severe case of COVID-19 infection.

Maybe you’ve been spared infection so far because you’ve been vigilant about physical distancing, masking, and other preventive measures. Or perhaps you’ve inherited genes that make your immune system particularly good at evading the COVID-19 virus. Or maybe you’ve just been lucky.

Regardless of the reason, it’s best not to let your guard down. The SARS-CoV-2 virus that causes COVID is highly contagious, especially the most recent variants. And while some people are at higher risk than others, anyone can be infected and anyone can become seriously ill from this virus. Even if you get a mild or moderate case of COVID-19, remember that some people experience symptoms of long COVID, such as fatigue and brain fog.

2. More and more vaccinated people are getting sick with COVID. And I’ve heard that more COVID-related deaths have occurred since vaccines rolled out than before they were available. So, how much of a difference do vaccines and booster shots really make?

They make a huge difference.

It’s estimated that COVID-19 vaccinations have saved more than two million lives in the US. If vaccination rates had been higher, estimates suggest more than 300,000 additional lives could have been saved.

We know that rates of infection, hospital admission, and death dropped dramatically among vaccinated people soon after vaccines became available. We also know that most severe cases of COVID-19 among the vaccinated occur among people who haven’t had a booster shot. Overall, severe cases and deaths remain much lower among people who are vaccinated and boosted than among people who are not vaccinated.

Is it true that the share of severe COVID cases and deaths occurring among the vaccinated has risen? Yes, but possible explanations for this trend actually show that vaccines continue to protect people from serious illness:

• When rates of infection fall, overall rates of hospital admission and death fall for everyone, vaccinated or not. So, the gap between rates of infection and death between vaccinated and unvaccinated people gets smaller.
• Available vaccines aren’t as effective against new variants of the virus. True, but these vaccines still effectively reduce the risk of severe disease.
• Immunity wanes over time. That’s true for even the best vaccines, which is why boosters are needed. Yet only about a third of the US population has received a COVID booster. That makes it easier for the virus to continue to spread and mutate.
• We’ve now logged more time with vaccines than without them since the pandemic began. Because no vaccine is 100% effective, the numbers of cases and deaths will continue adding up, eventually outnumbering pre-vaccine cases and deaths.

3. First, vaccines were going to solve this. Then we needed one booster shot. Now we need two. What’s happening, and why should I even consider this?

Good questions. The protection provided by most vaccines tends to wane over time. That’s why tetanus shots are recommended every 10 years. We’ve learned that protection against COVID-19 may wane a few months after the initial vaccine doses. A first booster is recommended for everyone who is vaccinated, five months after completing the two-dose Moderna or Pfizer vaccine series or four months after the single-dose J&J vaccine.

Because immunity from the first booster may wane sooner in older adults and people with certain health conditions, another Pfizer or Moderna vaccine dose is now available to those over age 50 and others at particularly high risk.

4. Now that mask mandates are in the rearview mirror and everyone is tired of COVID restrictions, what else helps?

It’s not yet clear that mask mandates should have been lifted as soon as they were, especially when rates of infection were starting to rise again. We’ll only know in retrospect if that was a good idea.

As for other measures, physical distancing, masking up, and other steps still make sense in certain situations. For example, if you’re using public transportation or traveling by air, a well-fitted mask can provide a measure of protection. If you’re regularly exposed to a lot of people and know you will soon be in close contact with someone who is at high risk, mask up and get tested in advance.

5. What’s the bottom line here?

Get vaccinated! If you’re eligible for a booster, get one. It makes no sense to get the initial vaccine and forego boosters. If you’re one of very few people who had a significant reaction to one type of vaccine, ask about getting a different type of vaccine as a booster.

When the pandemic began, few were expecting that more than two years later it would still be causing so much suffering and death. But we shouldn’t pretend it’s over; don’t throw out your masks just yet and do follow public health recommendations. If you’ve decided not to get vaccinated or boosted, think again (and again)!

Yes, we’ve all had it with the pandemic. But I think of it this way: when it looks like rain, throwing out your umbrella and pretending it’s sunny are decisions you’ll probably regret.

About the Author

Robert H. Shmerling, MD, Senior Faculty Editor, Harvard Health Publishing

Dr. Robert H. Shmerling is the former clinical chief of the division of rheumatology at Beth Israel Deaconess Medical Center (BIDMC), and is a current member of the corresponding faculty in medicine at Harvard Medical School. … See Full Bio View all posts by Robert H. Shmerling, MD

If you’re in your 80s or 70s and you’ve noticed that you’re having some memory loss, it might be reasonable to be concerned that you could be developing Alzheimer’s disease or another form of dementia. But what if you’re in your 60s, 50s, or 40s… surely those ages would be too young for Alzheimer’s disease or dementia, right?

About 10% of Alzheimer’s disease is young onset, starting before age 65

Not necessarily. Of the more that 55 million people living with dementia worldwide, approximately 60% to 70% of them have Alzheimer’s disease. And of those 33 to 38.5 million people with Alzheimer’s disease, memory loss or other symptoms began before age 65 in 10% of them. Alzheimer’s is, in fact, the most common cause of young onset dementia. A recent study from the Netherlands found that of those with a known classification of their young onset dementia, 55% had Alzheimer’s disease, 11% vascular dementia, 3% frontotemporal dementia, 3% Parkinson’s disease dementia, 2% dementia with Lewy bodies, and 2% primary progressive aphasia.

Young onset dementia is uncommon

To be clear, young onset dementia (by definition starting prior to age 65, and sometimes called early onset dementia) is uncommon. One study in Norway found that young onset dementia occurred in 163 out of every 100,000 individuals; that’s in less than 0.5% of the population. So, if you’re younger than 65 and you’ve noticed some trouble with your memory, you have a 99.5% chance of there being a cause other than dementia. (Whew!)

There are a few exceptions to this statement. Because they have an extra copy of the chromosome that carries the gene for the amyloid found in Alzheimer’s plaques, more than half of people with Down syndrome develop Alzheimer’s disease, typically in their 40s and 50s. Other genetic abnormalities that run in families can also cause Alzheimer’s disease to start in people’s 50s, 40s, or even 30s — but you would know if you are at risk because one of your parents would have had young onset Alzheimer’s disease.

How does young onset Alzheimer’s disease differ from late onset disease?

The first thing that should be clearly stated is that, just as no two people are the same, no two individuals with Alzheimer’s disease show the same symptoms, even if the disease started at the same age. Nevertheless, there are some differences between young onset and late onset Alzheimer’s disease.

People with typical, late onset Alzheimer’s disease starting at age 65 or older show the combination of changes in thinking and memory due to Alzheimer’s disease plus those changes that are part of normal aging. The parts of the brain that change the most in normal aging are the frontal lobes. The frontal lobes are responsible for many different cognitive functions, including working memory — the ability to keep information in one’s head and manipulate it — and insight into the problems that one is having.

This means that, in relation to cognitive function, people with young onset Alzheimer’s disease may show relatively isolated problems with their episodic memory — the ability to form new memories to remember the recent episodes of their lives. People with late onset Alzheimer’s disease show problems with episodic memory, working memory, and insight. So, you would imagine that life is tougher for those with late onset Alzheimer’s disease, right?

Depression and anxiety are more common in young onset Alzheimer’s disease

People with late onset Alzheimer’s disease do show more impairment, on average, in their cognition and daily function than those with young onset Alzheimer’s disease, at least when the disease starts. However, because their insight is also impaired, those with late onset disease don’t notice these difficulties that much. Most of my patients with late onset Alzheimer’s disease will tell me either that their memory problems are quite mild, or that they don’t have any memory problems at all!

By contrast, because they have more insight, patients with young onset Alzheimer’s disease are often depressed about their situation and anxious about the future, a finding that was recently confirmed by a group of researchers in Canada. And as if having Alzheimer’s disease at a young age wasn’t enough to cause depression and anxiety, recent evidence suggests that in those with young onset Alzheimer’s disease, the pathology progresses more quickly.

Another tragic aspect of young onset Alzheimer’s disease is that, by affecting individuals in the prime of life, it tends to disrupt families more than late onset disease. Teenage and young adult children are no longer able to look to their parent for guidance. Individuals who may be caring for children in the home now need to care for their spouse as well — perhaps in addition to caring for an aging parent and working a full-time job.

What should you do if you’re younger than 65 and having memory problems?

As I’ve discussed, if you’re younger than 65 and you’re having memory problems, it’s very unlikely to be Alzheimer’s disease. But if it is, there are resources available from the National Institute on Aging that can help.

What else could be causing memory problems at a young age? The most common cause of memory problems below age 65 is poor sleep. Other causes of young onset memory problems include perimenopause, medication side effects, depression, anxiety, illegal drugs, alcohol, cannabis, head injuries, vitamin deficiencies, thyroid disorders, chemotherapy, strokes, and other neurological disorders.

Here are some things that everyone at any age can do to improve their memory and reduce their risk of dementia:

• Perform aerobic exercise.
• Eat Mediterranean-style meals.
• Avoid alcohol, cannabis, and drugs.
• Sleep well.
• Participate in social activities.
• Pursue novel, cognitively stimulating activities, listen to music, practice mindfulness, and keep a positive mental attitude.

About the Author

Andrew E. Budson, MD, Contributor

Dr. Andrew E. Budson is chief of cognitive & behavioral neurology at the Veterans Affairs Boston Healthcare System, lecturer in neurology at Harvard Medical School, and chair of the Science of Learning Innovation Group at the … See Full Bio View all posts by Andrew E. Budson, MD

At one time, replacement parts for the eyes must have seemed unimaginable. Nowadays, if the inner lens of the eye becomes clouded by a cataract, a routine surgery to swap it out with a new artificial lens restores vision.

But what happens if the outer lens of the eye (the cornea) becomes damaged or diseased? You can have that replaced, too. “It’s not as common as cataract surgery, but many people get corneal diseases after age 50 and may need a corneal transplant,” says Dr. Nandini Venkateswaran, a corneal and cataract surgeon at Harvard-affiliated Massachusetts Eye and Ear.

More than 49,000 corneal transplants occurred in 2021 in the US, according to the Eye Bank Association of America.

What is the cornea?

The cornea is a dome of clear tissue at the front of each eye, covering the iris and pupil, that acts as a windshield that protects the delicate eye apparatus behind it, and focuses light onto the retina, which sends signals that the brain turns into images (your vision).

You need this combo of windshield and camera lens to focus and see clearly. But many things can go wrong within the five layers of tissue that make up the cornea. That can make it hard to see and rob you of the ability to read, drive, work, and get through other activities in your day.

How does damage to the cornea occur?

It may stem from a number of causes:

• Injuries, such as a fall. “Falls are a big reason for people to come in with acute eye trauma. The cornea can be damaged easily if something pokes it,” Dr. Venkateswaran says.
• Previous eye surgeries. “Especially for adults who’ve had several eye surgeries — such as cataract and glaucoma surgeries — the inner layers of the cornea can become damaged and weakened with age,” she adds.
• Illness. Problems like severe corneal infections, or genetic conditions such as Fuchs’ endothelial dystrophy, can cause vision loss.

What are the options for treating corneal damage?

Cornea treatment depends on the type of problem you have and the extent of the damage. “It’s a stepwise approach. Sometimes wearing a specialty contact lens or using medications can decrease swelling or scarring in the cornea,” Dr. Venkateswaran says.

When damage can’t be repaired, surgeons can replace one or a few layers of the cornea (a partial-thickness transplant), or the whole thing (a full-thickness transplant).

The vast majority of transplants come from donor corneas that are obtained and processed by eye banks throughout the US. In some instances, such as when repeated transplants fail, an artificial cornea is an option. Recovery after corneal surgery can take up to a year.

How long-lasting are corneal transplants?

There’s always a risk that your body will reject a corneal transplant. It happens about a third of the time for full-thickness transplants. It occurs less often for partial-thickness transplants. Preventing rejection requires a lifetime of eye drops.

Still, transplant longevity varies. “I’ve seen transplants from 50 or 60 years ago and now they’re starting to show wear and tear. Other patients, for a variety of reasons — immune system attacks, intolerance to eye drops, or underlying conditions — may only have a transplant for five to 10 years before they need another,” Dr. Venkateswaran explains.

Preventive eye care can help preserve the cornea

It’s crucial to get regular comprehensive eye exams to make sure your corneas and the rest of your eyes are healthy.

The American Academy of Ophthalmology recommends a comprehensive (dilated) eye exam

• at age 40
• every two to four years for people ages 40 to 54
• every one to three years for people ages 55 to 64
• every one to two years for people ages 65 and older.

You’ll need an eye exam more often if you have underlying conditions that increase your risk for eye disease, such as diabetes or a family history of corneal disease.

If you have any vision problems, such as eye pain, redness, blurred vision despite new glasses, or failing eyesight, see an eye doctor.

Fortunately, for people who do experience corneal damage, advances in surgical options are encouraging.

“Corneal transplants are a miracle,” Dr. Venkateswaran says. “I have patients whose quality of life was significantly decreased because they couldn’t see through their cloudy windshield. We can give them sight again, and we have the technology and medications to keep the transplant alive.”

About the Author

Heidi Godman, Executive Editor, Harvard Health Letter

Heidi Godman is the executive editor of the Harvard Health Letter. Before coming to the Health Letter, she was an award-winning television news anchor and medical reporter for 25 years. Heidi was named a journalism fellow … See Full Bio View all posts by Heidi Godman

“The horse has left the barn.”

Those six words, said by my husband’s oncologist, changed our lives forever, although the sense of impending loss had begun weeks earlier with a blood test. There would be more tests, exams, and visits to specialists. As George and I waited for a definitive diagnosis, we bargained with ourselves and with the universe. When we finally met with the cancer treatment team to review all the tests, George’s 6-foot 2-inch frame struggled to fit into the space at the small table, where we strained to follow the conversation. Hearing the word metastatic — meaning cancer had spread throughout his body — was like fingernails on a blackboard.

But there’s no real way to prepare for grief, an inescapable feature of the human condition. Its stress following the death of a loved one can lead to physical illness: cardiovascular diseases, broken-heart-syndrome (takotsubo cardiomyopathy), cancers, and ulcers. Emotional distress often sparks physical distress known as somatic symptoms. How each person navigates grieving varies. Comfort takes different forms for different people. While my journey is individual, my story touches on universal themes, particularly for those grieving in the time of COVID-19.

Anticipatory grief strikes first

George’s diagnosis was advanced metastatic prostate cancer, spread to lymph nodes and bone. There would be no surgery. No radiation. No chemotherapy. Only palliative care.

Some days George wanted to talk only with me. Other days he wanted to talk with those who were “in the same boat.” He saw himself as washed up on the shores of a new, unknown continent. I felt washed up with him. The National Cancer Institute describes these feelings as anticipatory grief, a reaction that anticipates impending loss.

In time, we returned to everyday routines. Sometimes we laughed and didn’t think about his illness. George even conceived of and hosted an annual party for his best friends — men who would be his pallbearers — and their partners. The “pallbearer party,” as it came to be known, was a wonderfully raucous event. Grown men laughed until they cried. Each year, by the end of the night, I knew the tears were for anticipated loss.

George lived another 11 years, more than twice what was expected. But anticipating his loss did not cushion my broken heart.

Acute grief following a death

George died in May 2020, at the beginning of the COVID-19 lockdown. Despite the pallbearers’ dress rehearsals, there was no funeral, no gathering of loved ones. Nothing to soothe my overwhelming pain.

In those first few weeks, time seemed stretched thin, moments repeating themselves like musical notes on a scratched record. I felt untethered, unmoored, adrift. My sides ached from crying; my knees were unsteady. I don’t recall eating.

At the funeral home, when I saw George in a casket, the large room seemed bright from lights hitting the shiny wood floor. Later, I realized the room was much smaller and dimmer than I remembered, its floor not shiny but covered by oriental rugs. Burgundy drapes kept out the sun. As I took in the scene, so different from my recollection, my chest heaved and spasmed.

Such physical reactions and perceptions are common in acute grief. The death of a loved one is accompanied by waves of physical distress that can include muscle aches, shortness of breath, queasy stomach, and trouble sleeping. Food may have no taste, and some experience visual hallucinations. The grief-stricken may not believe their loved one is dead.

Grief in the time of COVID-19

Restrictions to help prevent the spread of COVID-19 disrupted social rituals that connect us during grief. In The Atlantic, Ed Yong describes this absence of much-needed support as the “final pandemic betrayal.”

Although my husband died of cancer, not COVID, I experienced the loss of comforting rituals and the sense that my grief was never truly acknowledged. Experts call this disenfranchised grief. Some predict that prolonged grief disorder driven by this pandemic may reach rates seen only in survivors of natural disasters and wars.

Grief is proof of love

Losing loved ones is not easily incorporated into our life story, though it becomes part of it. The finality and acceptance of a monumental loss takes time. In The Year of Magical Thinking, Joan Didion captures the sudden tragic death of her husband: “John was talking and then he wasn’t.” Life changes in an instant. Yet it takes time to untangle and embrace all that it means.

My life must now be reconfigured and re-envisioned without George. Letting go of grief happens haltingly. Gradually, I noticed that more of my memories of George were happy ones, slowly crowding out the all-consuming early intensity of grief. With time I began to re-engage with the world.

Just as George had, I found I wanted to talk with others in the same boat. A bereavement group helped. I began to exercise more. That helped too. When our dogs died, I got a new puppy. Above all, I learned to be kind to myself.

If you, too, are struggling with loss, experts advise some basics: try to eat, sleep, and exercise regularly; consider a bereavement group or seek out others experiencing grief; stay open to new possibilities — new hobbies, people, and opportunities. Talk to a professional if, after months, you are preoccupied with thoughts of your loved one or find no meaning in life without them. These may be signs that your grief is stalled or prolonged. Effective treatment can help.

Every “first” without George — the first birthday, first wedding anniversary, first anniversary of his death — awakened the early days of intense grief. Still, the experience of living through each made me realize I could survive. I think George would be pleased.

Additional resources

Grief and Loss, CDC

NIH News in Health: Coping with Grief, National Institutes of Health

The Center for Prolonged Grief, Columbia University

About the Author

Martha E. Shenton, PhD, Contributor

Dr. Martha Shenton is professor of psychiatry and radiology at Harvard Medical School, and director of the Psychiatry Neuroimaging Laboratory at Brigham and Women’s Hospital in Boston. She and her team have pioneered in developing neuroimaging … See Full Bio View all posts by Martha E. Shenton, PhD