I was on Atkins for a couple years. While I was skinny then, when I began to eat carbs again I gained back 10 plus pounds. I've never been heavier. If I had never done the diet, I would be 10 pounds skinnier! I also made some of the worst decisions of my life, starving my brain of carbs. I did not realize at the time that ketosis is a diseased state. (biology 101)
I now know that a diet of fruits and veggies is the only way to go if you want to keep your health!
But that's just what I learned.