The U.S. Food and Drug Administration on Friday questioned the safety of DMAA, a stimulant used in dietary supplements, alleging that marketers were illegally selling the chemical.

Popular with fitness buffs seeking an edge or weight loss, the brands include Napalm, Code Red, Hemo Rage Black, Nitric Blast and Jack3D.

Hardly anyone succumbs to the bubonic plague these days, but U.S. health authorities on Friday approved a new treatment for it and other forms of the potentially deadly bacterial infection.

Fast food giant Kentucky Fried Chicken was Friday ordered to pay Aus$8 million (US$8.3 million) to an Australian girl who suffered severe brain damage and was paralyzed after eating a chicken wrap.

Monika Samaan was seven when she suffered salmonella encephalopathy -- a brain injury linked to food poisoning that also left her with a blood infection and septic shock -- in October 2005.

Steve Wohlen lay on his front lawn, blue, unconscious and barely breathing, overdosing on heroin.

His mother ran outside, frantically assembling a pen-like canister. Her heart pounding, she dropped to her knees and used the device to deliver two squirts up her son's nostrils.

A cancer diagnosis often inspires people to exercise and eat healthier. Now the experts say there's strong evidence that both habits may help prevent the disease from coming back.

New guidelines issued Thursday by the American Cancer Society urge doctors to talk to their cancer patients about eating right, exercising and slimming down if they're too heavy.

Africa's deadliest malaria parasite has shown resistance in lab tests to one of the most powerful drugs on the market -- a warning of possible resistance to follow in patients, scientists said Friday.

Researchers in London found resistance to artemether in test tube analysis of blood from 11 of 28 patients who had fallen ill after travelling in countries mainly in sub-Saharan Africa -- what they said was a "statistically significant" result.

There is no convincing evidence that the use of mobile phones damages human health, a "comprehensive" review of scientific evidence said on Thursday.

Studies have not demonstrated that the use of mobiles causes brain tumors or any other cancer, according to the review by the Health Protection Agency (HPA)'s independent advisory group on non-ionizing radiation.

It turns out you can recycle just about anything these days — even kidneys and other organs donated for transplants.

Recently in Chicago, in what is believed to be the first documented case of its kind in the U.S., a transplanted kidney that was failing was removed from a patient while he was still alive and given to somebody else.

A U.S. gynecologist claims to have found the G-spot, a supposed pleasure center on the front interior wall of the vagina, but some critics say not so fast.

In a study published in the Journal of Sexual Medicine on Wednesday, Adam Ostrzenski said he has confirmed the presence of the G-spot after extracting a tiny "well-delineated sac structure" from inside an 83-year-old cadaver.

Women who eat plenty of blueberries and strawberries experience slower mental decline with age than women who consume fewer of the flavonoid-rich fruits, a U.S. study said Thursday.

Based on a survey of more than 16,000 women who filled out regular questionnaires on their health habits from 1976 through 2001, the findings showed that those who ate the most berries delayed cognitive decline by up to 2.5 years.