Stroke Archive

Most strokes are caused by a clot that blocks a blood vessel in the brain. Those that damage small areas of brain tissue that don't control any vital functions are known as silent strokes because they don't cause any noticeable symptoms.

Peripheral artery disease (PAD), which occurs when fatty deposits clog arteries outside the heart, is underrecognized and potentially dangerous. The hallmark symptom is leg pain that occurs with exercise, called intermittent claudication. PAD is more common among people who are older, who smoke, and who have diabetes. The recommended treatment involves short periods of walking interspersed with rest periods when pain occurs. Walking increases blood flow in the leg's smaller arteries and helps create new channels to move blood around the blockages; it also helps discourage new blockages.

The more salt people eat, the greater their risk of clogged heart and neck arteries, a 2023 study suggests. Narrowed arteries (atherosclerosis) can lead to heart attacks and strokes.

COVID-19 may increase the risk of cardiovascular problems, including heart attack, stroke, pulmonary embolism, atrial fibrillation, and heart failure, up to a year after the infection. But vaccination appears to lower these risks. Getting just one dose of a COVID vaccine may halve the risk of myocarditis, a rare condition that causes inflammation of the heart muscle that can arise after viral infections.

Dry eye syndrome is one of the most common eye problems among older adults. Common symptoms include a gritty feeling in the eyes, sensitivity to light, or fluctuating vision that comes and goes. People with the condition can have good and bad periods, but by following prevention methods and seeking treatment when the disease flares, they can keep dry eye from interfering with their lives.

There are no specific foods that directly cause gallstones, but diet can play a role, as overweight people tend to develop more gallstones than those at a healthy weight.

A 2023 study suggests that some brain changes in people with obesity appear similar to those that occur in people with Alzheimer's disease, the most common cause of dementia.

Travel disrupts many of the body's natural rhythms, including digestion, increasing the odds of indigestion, diarrhea, or constipation. Food and water in developing countries can be contaminated with germs that make traveler's diarrhea more likely. Tactics to keep "traveler's tummy" at bay include packing over-the-counter digestive aids and familiar snacks, and avoiding street food and local water and ice.

An estimated one in 11 Americans has a kidney stone at some point in life. The larger a kidney stone, the more likely it will block urine flow and need treatment. Smaller stones may pass on their own. Drinking plenty of fluids can help prevent kidney stones.

In a 2023 study of more than 28,000 older adults, those who reported socializing the most frequently lived the longest, compared with people who said they didn't socialize.