Category: harvardhealth_news_UNDEFINED

Trichotillomania is a mental health disorder characterized by frequent, irresistible impulses to pull hair from the scalp or anywhere else on the body. It often results in embarrassing bald patches that people with the condition try to conceal. About one in 50 people has trichotillomania, and women are diagnosed and treated for it more often than men are. People with the disorder may pull hair when faced with stressors such as tension, loneliness, or fatigue. Among people who eat pulled hair, complications such as hairballs can be life-threatening.

Doctors are optimistic that artificial intelligence (A.I.) will one day play a role in curing and preventing Alzheimer’s disease. One example of A.I.’s application is its use in helping scientists learn how certain molecules might cause Alzheimer’s.

A 2025 study found that the shingles vaccine reduced the risk of developing dementia by 20%. The study supports (but doesn’t absolutely prove) the theory that infections may be one cause of Alzheimer’s disease and possibly other forms of dementia.

Kidney stones are increasingly common among Americans. Made of minerals and acid salts in the urine, the hard deposits cause symptoms when they get stuck in the ureter, the tube that leads to the bladder. Symptoms include excruciating pain, blood in the urine, nausea, vomiting, fever, and chills. Risk factors for kidney stones include low fluid intake, family history, pregnancy, obesity, high blood pressure, gastric bypass surgery, and eating foods high in salt or sugar. Most kidney stones pass on their own, but treatments can retrieve or destroy the stones.

Mindfulness might help improve attention and memory. Mindfulness is the practice of focusing on the present moment, including thoughts, feelings, and all information coming in from the senses, such as sights, sounds, and smells. Many studies have shown that mindfulness helps people improve well-being, concentrate, engage more effectively in daily activities, and pay more attention. Attention is the most crucial factor when it comes to memory; whatever someone pays attention to is what he or she remembers.

In a 2025 study of more than 85,000 people (average age 63), followed for six years, those who were the most active—even if they were simply doing light-intensity activities—had a 26% lower risk for cancer, compared with those who were least active.

In a 2025 study, researchers estimated that fewer than four emergency department visits attributed to semaglutide (Ozempic, Wegovy) occurred for every 1,000 patients taking the drug in 2022 and 2023. Most of the visits were related to gastrointestinal problems.

A randomized controlled trial published in 2025 found that people who followed a 4:3 intermittent fasting plan for one year, eating only 20% of their usual calories on three fasting days per week, lost more weight than people who were on a calorie-restricted diet.

To reduce the pain of aching hip or buttocks muscles, one might consider stretching them. The activity makes muscles healthier and more flexible, which might keep them from pressing against nerves or bursae that can become inflamed and tender. It’s best to stretch regularly with static stretches of the muscles at least three to five times per week, after a brief warm-up or a regular exercise routine. If hip or buttock pain flares, doing gentle stretches might ease discomfort in the moment.

In the summertime, one of the chief contributors to symptom flares of lung problems is hot air, especially if it’s also humid, stagnant, or very dry. Such weather might narrow the airways, making it much harder to breathe normally. This might occur because hot air irritates the nerves, widens blood vessels near the lungs, or causes people to breathe faster. To avoid breathing difficulty, doctors advise people with lung disease to follow strategies such as keeping their inhalers handy and staying in air-conditioned spaces.