Confirming the worst fears of many pregnant women in the United States and Latin America, U.S. health officials said Wednesday there is no longer any doubt the Zika virus causes babies to be born with abnormally small heads and other severe brain defects.
The first examination of a long-extinct Neanderthal's Y chromosome suggests that fertility problems may have prevented Neanderthal men from successfully mating with modern human females, researchers said Thursday.
Older men with clogged arteries who took testosterone therapy seemed to have a lower risk of heart attacks than men who did not take the hormone, a study suggested Sunday.
Genetic mutations that can be blamed for unusually high cholesterol are far rarer than previously thought, existing in only about 2 percent of the population, researchers said Sunday.
The first major research of its kind shows that cholesterol-lowering statins can prevent heart attacks and strokes in a globally diverse group of older people who don't have heart disease.
Taking steps to recover from depression and boost vitamin D levels may improve heart health, according to new research out Saturday.
Liberian authorities on Saturday called for calm following the discovery of a fresh case of the deadly Ebola virus, more than two months after the epidemic had been declared over in the country.
Patrick O'Brien was a young, budding New York City filmmaker and DJ known as "TransFatty" when his legs suddenly started trembling uncontrollably. Walking became a struggle. He'd lose his balance and often fall down.
One in five adults could be obese by 2025, said a major survey Friday that warned of a looming epidemic of "severe obesity" with significant health and economic costs.
The world's first liver transplant from a donor infected with HIV to an HIV-positive recipient was announced Wednesday by U.S. doctors, three years after a U.S. ban on such operations was overturned.