CALP is the Carbohydrate Addict LifeSpan Program. It's an update of Carbohydrate Addicts Diet (CAD). Though CAD works for ALOT of people, the CALP has more "up-to-date" plan information. You just have to find the one that works best for you.

You can learn more about the different Carbohydrate Addicts Books written by Drs. Hellers at

www.CarbohydrateAddicts.com

Sorry about the confusion. Hope this helps.