The Fast 800 is one of the most recent diet books by Dr Michael Mosley, author of the famous 5:2 diet. His books focus on the use of “intermittent fasting” for weight loss, blood sugar regulation and general health. The author I first heard from Dr Mosley through his piece on high intensity interval training (HIIT, see video below). I later learned about his 5:2 diet and know a few people who have done it. It wasn’t until I read his bio that I realised that Dr Michael Mosley became a psychiatrist after working in other fields, and then decided to move away from the medical profession. He is mostly…