It's the world's number one killer among infectious diseases, but tuberculosis has been eclipsed by HIV/AIDS as a focus of global attention and donor funding. 

Advances in eye exam technology could one day help doctors diagnose people with Alzheimer's disease long before symptoms appear, researchers said Thursday.

More than 50 cows, sheep and horses have died in France's most serious outbreak of anthrax in two decades, according to officials who have warned of a vaccine shortage.

Faced with scenes of blood flowing in rubbish-strewn roads and of streets littered with animal entrails, authorities in the Egyptian capital say they aim to crack down on the outdoor slaughter that marks one of Islam's main holidays.

Eid al-Adha, or the festival of sacrifice, is marked by Muslims sacrificing animals according to religious traditions at the end of the hajj annual pilgrimage to Mecca and Medina.

Middle-aged people who get roughly half their daily calories from carbohydrates live several years longer on average than those with meat-heavy low-carb diets, researchers reported Friday.

Salt consumption exceeds national and World Health Organization guidelines in most countries, but only the highest-sodium diets, such as in China, are linked to clear health risks, researchers said Friday.

Hardly anybody likes hospital food but in Venezuela, it's so awful -- monotonous, starchy diets cooked in filthy conditions, and newborns fed intravenous solution for lack of baby formula -- that experts call it an actual health risk.

A new outbreak of the Ebola virus in the Democratic Republic of Congo is believed to have killed 33 people in the east of the country, the health ministry said Saturday.

Elton John Tuesday blasted Russia and eastern Europe governments for "discrimination against gays" saying such bigotry was thwarting the fight against AIDS, as scientists announced disappointing results in the quest for a cure.

In a sudden tirade at the second day of a major conference, John, a seasoned AIDS campaigner, gave voice to years of frustration and spoke of the plight of gays who are oppressed in many nations.

Celebrities from actress Charlize Theron and pop star Elton John to Britain's Prince Harry will call for action on the second day of a world AIDS assembly in Amsterdam Tuesday, as concerns grow over an HIV surge in some parts of the world.