Long-term use of certain anti-depressants have been linked to dementia in a large British study, researchers said Thursday, though they could not definitively conclude that the drugs were the cause.

Exercising after a heart attack may help stave off death for longer, Swedish researchers said Thursday.

Indonesia's deadliest bootleg liquor crisis in years has killed at least 90 people, authorities said Tuesday, prompting one region to declare a state of emergency.

Government and other scientists are proposing a new way to define Alzheimer's disease — basing it on biological signs, such as brain changes, rather than memory loss and other symptoms of dementia that are used today.

Eleven Indonesians died Sunday and several others are critically ill after drinking bootleg liquor, police said, days after the death of 24 others from illicit alcohol.

People as old as 79 may still generate new brain cells, US researchers said Thursday, stoking fresh debate among scientists over what happens to our brains when we age.

Lassa fever has killed 142 people in Nigeria since the start of the year, the Nigeria Centre for Disease Control (NCDC) said on Thursday, reporting a rise of 32 fatalities in a month.

"Since the onset of the 2018 outbreak, there have been 142 deaths," it said. 

Gay dating app Grindr was under fire on Monday for sharing information about users' HIV status or locations with two companies enlisted to optimize its software.

Some 300 million people worldwide are living with the deadly hepatitis B virus (HBV), but only one in 20 received adequate treatment, researchers reported Tuesday.

Launched in the United States 20 years ago, Viagra has sold in the billions and become an unexpected source of revenue for its maker Pfizer, as well as copycats worldwide.