After putting on a stone in weight in the last year, I have to consider going back on the 5/2 diet. A year ago, when on it, I found it hard but just managed it. However, I didn't seem to be losing anything. Since stopping it & coming off hrt though, I have found the weight has piled on. Very depressing. Especially as up until my 40's, before developing an underactive thyroid, I had a great metabolism & couldn't put weight on if I tried. Feel like the hypothyroidism plus menopause is like a double whammy that's almost impossible to combat! I've also been a vegetarian for over 20yrs. I like the odd choc but wouldn't say I over eat. So feel I've no choice but to try the 5/2 or possibly 4/3 to actually achieve weight loss. Also found memory worse with this condition. I've just read that fasting produces more reverse t3 esp on those with hypothyroidism & so counteracts weight loss by slowing everything down even more! What is the answer?