A sharp increase in the rate of obesity-linked cancers among young adults in the United States could foreshadow a reversal in the overall decline in cancer mortality, researchers warned Monday.

In a sweeping study covering two-thirds of the US population, they showed that half a dozen cancers for which obesity is a known risk factor became more frequent from 1995 to 2015 among women and men under 50.

Confidential data of 14,200 people diagnosed with HIV, mostly foreigners, has been stolen and leaked online in Singapore, authorities said Monday, the second massive data breach in the city-state within months.

An American convicted of numerous crimes is believed to have leaked the information after obtaining it from his partner, a Singaporean doctor with access to the HIV registry, the ministry of health said. 

The Israeli government on Sunday gave the final go-ahead for the export of medical cannabis, the health ministry said, a move expected to generate significant revenues for the state.

A French public health watchdog issued a warning Wednesday about the risks of several chemicals found in disposable nappies, particularly artificial perfumes, leading the government to demand that manufacturers withdraw them from their products.

Should healthy people take aspirin to ward off heart disease? 

Nigerian health authorities on Tuesday declared a new outbreak of Lassa fever that has killed 16 people since early January, despite successfully containing the disease last year.

A researcher who claimed to have created the world's first genetically-edited babies will face a Chinese police investigation, state media said Monday, as authorities confirmed that a second woman fell pregnant during the experiment.

At least 40 people have died and more than 1,000 have tested positive for swine flu since the beginning of this year in a western Indian state popular with foreigners, authorities said Friday. 

World cycling's governing body, the UCI, is to ban painkiller tramadol from March 1 and will punish offenders with penalties ranging from a fine to a nine-month suspension.

Vlastimil Gular's life took an unwelcome turn a year ago: minor surgery on his vocal cords revealed throat cancer, which led to the loss of his larynx and with it, his voice.

But the 51-year-old father of four is still chatting away using his own voice rather than the tinny timbre of a robot, thanks to an innovative app developed by two Czech universities.