Episode 2

Dr Chris van Tulleken oversees an experiment to see if you can get healthier not by changing what you eat but when you eat, while Gabriel Weston investigates whether low-sugar products could be making us put on weight. Dr Saleyha Ahsan looks into scented products and what they do to the air in our homes. The team also follows the story of a 12-year-old girl trying out a new treatment for peanut allergy.