A third of dementia cases could be prevented by making environmental and life-style changes starting in childhood, scientists have claimed.
US scientists have amassed "planetary-scale" data from peoples' smartphones to see how active we really are.
Night shift work may stop the body repairing daily damage to DNA and raise the risk of mutations which lead to cancer, a new study suggests.
Eating a diet rich in fruit and vegetables while cutting down on meat substantially lowers the risk of obesity, research shows.
Children of divorced parents may be at higher risk of being overweight or obese than those whose parents are married, a Norwegian study said Thursday.