Diseases & Conditions Archive

Protecting the skin from the sun doesn't increase the risk of vitamin D deficiency or bone fracture, according to a recent study.

A recent analysis found evidence mixed on whether zinc can help prevent or treat a cold. However, there appears to be no significant harm from taking over-the-counter zinc products in safe amounts per the label's instructions.

Dietary fat can both help and hurt heart health, depending on the source. Eating adequate amounts of the "good" fats—monounsaturated and polyunsaturated—can help reduce cholesterol levels and lower blood pressure. "Bad" saturated fat found in many processed foods can have the opposite effect. Following heart-healthy diets like the Mediterranean and DASH diets and making small substitutions in daily eating habits can ensure people get the proper amounts of good fats.

People who sip several daily cups of both coffee and tea may be less likely to have a stroke than people who don't drink either beverage.

Stimulant medications, which are usually prescribed to treat attention deficit disorder in children, are being prescribed increasingly to older adults. These drugs may cause a short-term spike in the risk of heart-related problems, including heart attacks, strokes, and arrhythmias. Dietary supplements that promise weight loss or better physical or mental performance may contain prohibited, unlisted, and potentially dangerous stimulants.

A study published online Oct. 4, 2021, by the journal Medicine & Science in Sports & Exercise found that about 46,000 U.S. cancer cases per year can be attributed to getting less than 300 minutes of moderate-intensity exercise per week.

For hundreds of years there have been documented instances of groups of people developing similar, medically inexplicable, and sometimes bizarre symptoms, such as paralysis, involuntary tics, or uncontrollable laughter. Known as sociogenic illness, a recent example appears to be fueled by social media postings—meaning physical proximity is no longer a factor.

Exercise may help to reverse some types of heart damage. Not only can workouts prevent heart problems, but it may help to improve conditions that may raise risk for cardiovascular events. A 2021 study, for example, showed that a yearlong exercise program helped improve heart health in people who were at increased risk for heart failure.

It is possible to experience a stroke without symptoms. Addressing cardiovascular risk factors can help lower the risk.

A large study published online Aug. 29, 2021, by The New England Journal of Medicine found that people who used a salt substitute on their food had a lower risk of stroke, heart attack, and early death, compared with people who used regular salt.