Mark's health issues started early in his teenage years. Growing up in the north east of the UK, he'd been put on antibiotics for an ear infection, and at the age of 16 his doctor wanted to put him on anti-depressants. But instead, Mark decided to study in the health field, which included changing his diet. And he started cooking for himself and experimenting with different foods. Mark was experiencing inflammatory bowel syndrome (IBS) and asthma, and when he cut dairy from his diet, hi...