Originally Posted by mecompco
You sure can lose weight fasting (I've done a couple 30 day water fasts in the distant past) but I find that I can lose about as fast keeping a reasonable daily calorie deficit and doing some moderate exercise.
I've seen this as well, except my longest water fast was about 10 days.
The other thing is, while fasting you have NO ENERGY for exercise so you're not maintaining your training. If you can lose weight almost as fast by exercising, I think that's a plus.
But still, there are certain health benefits to fasting, and fasting for fasting sake alone.