When I started my lo-carb diet, I lost 15 lbs in around 4 months. But then I slowly gained 10 lbs back. It's been 1 1/2 years now, & I still wouldn't go back to my hi carb past. I was getting constant heartburn before, and the Zantac commercials were calling me. A month into the diet I realized it had stopped. Just for that reason alone I'll never go back.