US scientists try to grow human organs inside pigs to solve the transplant shortage by injecting human stem cells into pig embryos.

Anxiety disorders need more research, says a global review of scientific studies which found women were twice as likely to be affected as men.

The first major trial to see whether losing weight reduces the risk of cancers coming back is about to start in the US and Canada.

The Welsh NHS would need an extra £246m a year by 2030 to cope with EU migration if it stayed in the union, leave campaigners say .

A drug to treat alcohol problems was licensed for use despite insufficient evidence it was effective, researchers in Scotland find.