We are all increasingly bewildered by the simple question of what to eat. Despite advice from experts, governments and dieticians about the dangers of too much fat, sugar, protein and lack of exercise, our nutrition - and the global obesity crisis - is getting worse. Why can one person eat a certain[...]

If you share most of the same genetic material, what makes you so different from your siblings? How much are the things you choose to do everyday--what you eat, how you vote, who you love--determined by your genes, and how much is your own free will? Using fascinating case studies of identical twins[...]

Since the discovery of DNA, scientists have believed that genes are fixed entities that cannot be changed by environment - we inherit them, pass them on to our children and take them with us when we die. Professor Tim Spector reveals how the latest genetic research and his own pioneering studies on [...]