Starting in 7th grade, I began to get horrible migraines. By the time I was 22, I had all the symptoms of hypoglycemia as well. (And all this time I weighed about 112 lbs in Jr. High and HS, and 120 lbs after that... so it wasn't weight related).
People kept telling me all I had to do was eat more, but it didn't help at all! I had three children, my weight went up and down a few times, and the migraines and hypoglycemia symptoms got a LOT worse.
Finally, when I was about 30, my brother gave me a couple books about a "hypoglycemia diet" to read.
I read the books, and decided they sounded similar to what I had heard about Atkins, so I read his book too. That's all it took! I went on induction, quickly lost the weight I had put on after having my kids, and, best of all, my migraines dissappeared, and so did the hypoglycemia!!
I know it is the diet that helped me, because I have fallen off the wagon for extended periods of time (to try and save money by stretching meals out with carbs). I didn't end up saving very much money, and my awful symptoms came back.
Sooo, it was health reasons rather than weight reasons that got me started on Atkins, but I have to say I appreciate the weightloss too- and the energy I now have to actually workout and get in good shape!