I've had all of the tests under the sun to find out why I couldn't lose weight. I've previously had a very large dermoid ovarian cyst, I have pcos, endometriosis, fibroids and currently 3 endometriod cysts on my one remaining ovary. Put a list of 20 symptoms of underactive thyroid in front of me and I can tick them all off. But there is nothing wrong with it. I've had every diet pill available, seen a dietician, an endocrinologist and have fully paid up membership to every diet club out there. The end result of all that - reaching my top weight ever and only managing to shift a grand total of 3 stone in 5 years.
Then I found vlcd's. I've now beeen dabbling in vlcd/low carb for around 7 months. I've lost a smidge short of 5 stone in those few months. The more I learn about ketosis, the more I am convinced of my own carbohydrate intolerance, and the more I learn about this, the more my failed past attempts make sense to me. There are some very interesting books and blogs around that can tell you more about this if you are interested, but first and foremost, from someone who has been there and struggled for over 25 years to lose weight only to get bigger and bigger - I can absolutely guarantee to you that a ketogenic vlcd WILL work if you stick with it. I'm living walking proof of that, and it's fantastic!