Syphilis is a particularly dangerous sexually transmitted infection (STI). As rates of the disease continue to climb, a national group of health experts is urging people at high risk to get screened. Who's especially vulnerable to this potentially deadly STI?

Using e-cigarettes ups the odds that teens will start smoking real cigarettes.
But would those teens have started smoking even if they didn't vape first?

An estimated 5 million Americans may have dementia. But as many as 1/2 of them
haven't been diagnosed. Find out how delaying a dementia diagnosis
could put your loved one—and other people—in harm's way.

Being physically fit in midlife may cut your risk for stroke later in life by about 1/3.
Find out how much exercise the American Heart Association recommends
that adults should get every week.

A survey on risky behavior in high school students shows declines in cigarette smoking, fighting and binge drinking. Unfortunately, the same can't be said
for other dangerous activities.