Preventive care Archive

Earwax should be removed only if it causes problems with hearing, ringing in the ears, or an earache. To unblock the wax, people can use an over-the-counter ear-cleaning treatment to flush it out. If this is not successful, see your doctor.

Following a mostly plant-based diet starting in middle age can boost a person's odds of healthy aging, defined as reaching age 70 free from chronic disease while also maintaining cognitive, physical, and mental health, according to a 2025 study.

A healthy diet is a proven and powerful way to lower your risk of heart disease. Since dinner is often the main meal of the day, it's a good time to feature foods that support cardiovascular health. Four Harvard physicians share their favorite healthy dinners, which focus on lean protein (such as tofu, fish, and chicken) and a variety of vegetables.

A 2025 study suggested that a structured exercise plan can significantly reduce the risk of falls among older women who take multiple medications.

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.

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.

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.

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.

Wooziness is often just a passing episode of lightheadedness. But it might signal something very serious, such as a stroke or heart attack. When wooziness occurs, one should sit or lie down for a few minutes, rest, and have a drink of water or juice. If wooziness eases, it's best to report the episode to your doctor. If lightheadedness hasn't improved or if it's accompanied by other symptoms, such as chest pain, trouble speaking, or weakness or numbness on one side of the body, call 911 immediately.