GOETTINGEN - Scientists in Germany said they had developed a drug that halts the progress of Alzheimer's disease in mice and hope to begin tests on humans in two years' time.

NEW YORK - An E.coli outbreak in five US states has been traced to cheese sold at a supermarket chain, a media report said.

LONDON - Dentists have warned that young women are jeopardising their health by using DIY teeth-whitening treatments involving baking soda, ash and hydrogen peroxide.

LONDON - Jolting the brain with an electric current can make it good or bad with numbers, depending on the spot where it is applied, study shows.

WASHINGTON - The harder we have to try to obtain something, the more we realise its worth. This applies even to food we normally find unappetising, a study shows.