Diet alone doesn’t seem to cause all the changes that the surgery does.
I personally do not have a weight problem, with the exception that I was too thin when my thyroid was hyper.
A dear friend is looking into the surgery, and has recently been diagnosed with Type II. She has lost considerable weight, but her blood sugars are still high, and she and her internist are planning a surgical consult.
Surgery is not without side effects. Please tell your friend to be careful. Surgery may lead to osteoporosis...
http://www.mercurynews.com/health/ci_12594487?nclick_check=1
Also, I believe a paleo diet will definitely lower blood sugars, as it has mine. It’s worth trying before taking the irreversible step of surgery.