My wife (Thyroid problem) and me bumped into 2 old friends who looked a lot slimmer than when we last met them. They told us about the Horizon TV programme last August investigating about living longer and coined the phrase the "The Fast Diet' - look for the book in Costco or Amazon . We started in January and have both lost a stone (in a healthy sustainable way). Check it out, it's a live longer strategy rather than a 'diet' as such. Initially you lose a pound a week.