It's not happened to me, possibly because I've been losing weight relatively slowly (it's taken me about two months to lose a stone).
I remember reading recently about how it was a common side effect for people doing Lighter Life, which is one of the really low-calorie diets where some people with a very high BMI lose huge amounts like 10 or 11 pounds in the first WEEK!
Having had a bit of look around on the internet, it seems to be common generally for people losing weight rapidly, although I'm not sure if anyone has a definitive reason as to why it should happen.
The bad news is that it seems you can't do much about it, but the good news is that it seems to be temporary so it should come back. Is it really loads you're losing? It sounds miserable.
Thanks for all your help.....
In answer to some of the questions Im doing SF properly in fact some days Im probably having more calories than they say....but Im still loosing weight ..which is good ...maybe my body is just shedding the winter coat lol it when really long and thick in the summer.... Ive been dieting since August and Ive lost 3 stone 1lb so far... I guess we will see what happens. Im going to the hairdressers ths week to get it cut hopefully make me feel better if its no so long and rat tail like lol