The main bacteria that cause chronic gum disease may be behind Alzheimer's disease, a report claims, based on a study carried out by Cortexyme, a pharmaceutical company in San Francisco.

With all the controversy having been rung up over the safety of our mobile phones, should you put your smartphone usage on divert, or is the controversy just a missed call in a telephone-shaped teacup?

Although scientists have long thought that cholesterol levels in the body were controlled solely by diet and liver production, a new study lead by a University of Cincinnati researcher has discovered that the brain also actively controls cholesterol levels.