Band Gastric Bypass Surgery (not the only type of gastric bypass): very successful at “curing” T2 diabetes if you survive the operation
Folks with T2 diabetes who undergo weight-loss surgery (bariatric surgery) often see a reversal or remission of their diabetes. The reversal doesn’t always last.
In either case, bariatric surgery does seem to reduce the risk if microvascular complications, namely retinopathy (eye disease), neuropathy (nerve pain or numbness), and nephropathy (kidney disease).
The conclusion of a recent study:
“Our results indicate that remission of type 2 diabetes after bariatric surgery confers benefits for risk of incident microvascular disease even if patients eventually experience a relapse of their type 2 diabetes. This provides support for a legacy effect of bariatric surgery, where even a transient period of surgically induced type 2 diabetes remission is associated with lower long-term microvascular disease risk.”
Diabetic Mediterranean Diet 