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HEALTHY-FOOD NATURAL-BEAUTY YOGA

Thunderstorm asthma: Bad weather, allergies, and asthma attacks

photo of a stormy night sky with multiple flashes of lightning spiking down from dark clouds over city lights and a blurry line of highway lights

It’s an old line: everyone complains about the weather but no one is doing anything about it.

But if you’re a person with bad allergies or asthma, stormy weather can be more than an annoyance; it can be a serious threat to your health. “Thunderstorm asthma” was first reported in the 1980s in England and Australia, and cases continue to crop up. Just after severe thunderstorms passed through Melbourne, Australia in 2016, more than 9,000 people sought urgent medical care for asthma during one notable event. Medical facilities were overwhelmed and at least eight people died. That’s unusual, but if you do have asthma — or seasonal allergies, as it turns out — understanding this trigger can help you stay well.

What is thunderstorm asthma?

The term describes an attack of asthma that starts or worsens after a thunderstorm. It can occur in anyone with asthma, but it most often affects people with seasonal allergic rhinitis, which many people know as hay fever or allergies. Heralded by a runny nose, sneezing, and itchy eyes, seasonal allergies are often worst in the spring, summer, or early fall.

Rain tends to lower pollen counts by cleansing the air, and many people find that rainy weather tends to reduce asthma symptoms triggered by allergies. But thunderstorms can make asthma worse because of a unique sequence of events:

  • Cold downdrafts concentrate air particles, such as pollen and mold
  • These air particles are swept up into clouds where humidity is high
  • In the clouds, wind, humidity, and lightning break up the particles to a size that can readily enter the nose, sinuses, and lungs
  • Wind gusts concentrate these small particles so large amounts can be inhaled.

What raises risk for experiencing thunderstorm asthma?

According to a new study in the Journal of Allergy and Clinical Immunology, a whopping 144 out of 228 people with seasonal allergies reported experiencing thunderstorm asthma — that’s 65%! And many of the asthma attacks set off by thunderstorms weren’t mild. Nearly half of people who had an attack sought emergency hospital treatment.

Among people with seasonal allergies, risk factors for experiencing thunderstorm asthma include having

  • poorly controlled asthma symptoms (assessed by a standard asthma questionnaire)
  • a low score on a rapid exhalation test (a common breathing test for asthma)
  • higher levels of a certain antibody (ryegrass pollen-specific IgE)
  • higher numbers of certain blood cells (eosinophils, which tend to increase when people have allergic conditions)
  • higher levels of exhaled nitric oxide (one measure of lung inflammation among people with asthma).

Not everyone with these risk factors will develop thunderstorm asthma. And even among those who do, asthma attacks won’t necessarily occur with every storm. But it may be useful to know if you’re among those at risk, especially if you live in an area where thunderstorms are common.

The bottom line

Thunderstorm asthma may seem like more of a curiosity than a serious threat to public health. But when it affects a large population area, emergency rooms can become overwhelmed, as happened during the 2016 Melbourne event. A better understanding of when these events are expected could lead to advanced warning systems, enhanced emergency room preparedness, and even preventive treatment.

In the US, 25 million people have asthma and more than 20 million have seasonal allergies. Odds are good that millions have both, which puts large numbers of people at risk for developing thunderstorm asthma.

If you’re among them, the weather forecast may be much more than just a guide on what to wear or whether to bring an umbrella. Knowing thunderstorms are headed your way may serve as an advance warning to double check that you are taking your asthma medicines properly, have a supply of rescue medicine handy, or simply plan to stay indoors until the storm has passed.

About the Author

photo of Robert H. Shmerling, MD

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

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Untangling grief: Living beyond a great loss

A pink heart on buckling, cracked concrete; concept is broken heart

“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

photo of Martha E. Shenton, PhD

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

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I’m too young to have Alzheimer’s disease or dementia, right?

photo of an MRI scan of a person's brain with a hand holding a magnifying glass over a portion of it

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

photo of Andrew E. Budson, MD

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

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Corneal transplants becoming more common

A cross section of an anatomical model of the eye against a black background; the clear plastic dome of the cornea shows on the left

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

photo of Heidi Godman

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