A study has found that having either more or less than six to eight hours sleep a night could increase the risk of heart disease or stoke.


A US study has found that people who work in open plan offices do more physical activity during the day, and are less stressed at work and at home.


The British Association of Dermatologists has warned that a chemical found in gel and acrylic nails and varnishes could cause allergic reactions in some people.


A study of over one million people in the US has found that the optimum amount of exercise for improving mental health is 45 minutes, three to five times a week.


A survey of 1,000 British parents has found that children eat up to five times as much sugar during the summer holidays than they do at other times of the year.