I am 10 years post-RNY and lost a great deal of weight, most of which I have managed to keep off. I did have that 20% regain the doctor warned me about, and I really want to get off. But, I have found that it is MUCH harder to lose weight post bypass than pre. I did my first complete W30 last October and it was great. I have found that my body responds extremely well to eating paleo, it is just keeping it up! I am starting my next W30 July 1st, and hope to use it to transition to a permanent change in eating lifestyle. I have seen others in my life do it successfully, so I am highly inspired.