Gloria Hunniford and Chris Bavin discover if coconut oil really has the incredible health benefits that have led to it becoming so fashionable. As the truth is revealed, a devotee realises the oil has a surprising dark side.As three generations of the same family share their food habits to see which has the best diet, do teenagers really eat as badly as some headlines suggest?And after reports suddenly declared we should eat less protein as we get older, the team explores how much is needed to keep us fit and healthy into old age.

Gloria Hunniford and Chris Bavin settle the argument over whether tea and coffee are good or bad for us - and if the same is true for both. There is also the truth about a food often touted as a way to fight cancer. And, after reports suggesting reusing plastic water bottles is a bad idea, tests reveal if we should be using a fresh one every time.

Gloria Hunniford and Chris Bavin investigate the controversial diets that recommend cutting out entire food groups from what you eat. With the experts divided, could some of these quick-fix fads do you more harm than good?The team also unpicks the startling headlines suggesting everything we have been told about the risk from saturated fats is wrong, and they test why we sometimes keep eating even when we are full. Is there an easy way to switch off your appetite?