I was on WW two different times over 20 years and did well on it both times (losing 30 lbs)but discovered it didn't take care of my root problems which were sugar and carb cravings. (I have an extreme tendancy to eat very little protein and a lot of carbs.) Now I have reversed that and feel way better.

After gaining 20 lbs back due to starting a 2nd job, I quit the job, started exercising and started the South Beach diet which I love,
I am down 18 lbs and am able to control my carb consumption much more. Also I discovered through starting South Beach that I am allergic to all wheat and oat products. So an even better benefit on top of ithe weight loss is my breathing is way better and I can climb hills way faster on my bike than I could last year