I am a recovered anorexic, recovering bulimic, and LC hasn't made me gain weight. What DID make me gain weight was binging on sugary/carby foods, I went from 80 to 124 pounds in less than a year! After starting low carb, my weight has stabilized at a healthy level and I feel great. I would say LC would be a good way for you to maintain your current weight, and when you're ready to gain weight, just add in more carbs, like fruit and higher carb veggies