Men who’ve smoked pot in the past or currently smoke marijuana have higher concentrations of sperm than men haven’t smoked pot, say researchers.

Is legalized marijuana having a negative an impact on traffic safety in the United States? Researchers conducted a study to find out.

Researchers say they’ve developed a new way to treat chlamydia (Chlamydia trachomatis) — the most common bacterial STI (sexually transmitted infection).

Women with non-cancerous (benign) ovarian cysts that don’t cause symptoms may not require surgery to remove them, suggests a study.

There may be a link between early-onset colorectal cancer — colon or rectal cancer diagnosed before age 50 — and time spent sitting and watching television.

Researchers found evidence that weight loss and better nutrition can positively affect mental health and ease symptoms of depression and anxiety.

In people with psoriasis — a chronic skin condition — biologics may help prevent heart disease, according to an observational study.

According to an analysis of 28 clinical trials, statins lower the risk of major cardiovascular events like heart attack and stroke, even in people over 75.

Fasting — putting the body into “starvation mode” — can increase metabolic activity, produce antioxidants, and reverse some effects of aging, suggests a study.

The FDA is warning that certain test strips used with medical devices to monitor blood levels of warfarin (Coumadin, Jantoven) may provide inaccurate results.