Eat to Live Forever with Giles Coren

How far would you go to live longer? Would you go fruitarian, where your diet is 100% fruit? How about the paleo diet, eating only the foods hunted, fished or gathered in Palaeolithic times? Or perhaps you’d prefer a near-starvation regime? Food writer Giles Coren tries three extreme diets to figure out what’s best - a longer life lived wisely or a shorter life that includes cake.