Even type 2s on insulin have a very hard time keeping unwanted pounds off. I was the original skinny minny when the doctor decided I needed to take insulin injections along with my oral meds.

I follow the South Beach phase 2 food plan. I follow it pretty religiously too. and have for the best part of 10 years because it is very low carb and you can tailor it to fit your needs.

Contrary to popular opinion, it and Atkins are NOT high fat or high protein food plans!!! They have sensible serving sizes and the choice of foods is great. You do not HAVE to buy specialty foods on either one.

If you eat sufficient saturated fats and sufficient protein, you will be fuller faster so more sated and not want or need as much of the carb stuff.

This study was with type 2 people, but same works for type 1.

http://www.pubmedcentral.nih.gov/article...

And this is from Livin LaVida Low Carb blog:

http://livinlavidalocarb.blogspot.com/20...

Just count carbs very carefully, medicate only enough, and get movin!!!