Scientists think they have the answer connecting calorie intake with Alzheimer's and other aging diseases. Could they be right?

Can heart failure be prevented in older people? Maybe, according to a new study

Why can't colonscopies get easier? Why can't a pill cam be used to this test instead?

This new test gives doctors a lot of information about you just by looking at your retinas.

Should we be vaccinated against h1n1?

Will the new vaccines be safe or will they be considered as dangerous as the ones for the 1976 swine flu?