@specialsauce
I honestly don't know if 'he' is promoting this or people on mumsnet are just taking the 800 cal a day out of the diabetic context and advising it on mumsnet to people who could be harmed by lowering their calories to that extent
Why have you put 'he' in inverted commas?! Dr Moseley is definitely a he!
And the Fast800 is not a plan for diabetics, although it is one that is a) based on research into diabetes and b) will certainly help people who are diabetic or pre-diabetic. It's a plan based on research done by Newcastle professors Roy Taylor and Mike Lean.
I think it is bandied about on Mumsnet, rather like the Atkins diet used to be, by people who know little or nothing about it, and who certainly haven't read the book. It's a tailored/tapered plan which starts off with a period of very low calorie eating, but then after that period of time moves on to higher calories and then to a plan based on the Mediterranean Diet.
From BBC Good Food:
The plan starts with a rapid weight loss phase: this lasts between two and 12 weeks, during which you follow a daily 800-calorie eating plan. You do this by following a moderately low-carb, Mediterranean-style diet, with lean protein sources and vegetables ...
The second stage of the plan involves intermittent fasting, restricting calories to 800 a day for two days of the week, then eating a healthy, low-carb, Mediterranean diet for the remaining five. This phase of the plan offers an opportunity to embrace home cooking, reduce processed foods and focus on vegetables, wholegrains, nuts, seeds, legumes, healthy fats and lean protein ...
Once you've achieved your goal weight, you enter the maintenance phase. This phase is designed to fit personal goals and to work with your lifestyle; you'll continue with the Mediterranean-style of eating, following a low-sugar diet with limited amounts of starchy carbs and including a weekly fast day, if needed.
^^