I have been on CAD/CALP for 6 weeks now and read both books thru. You are not allowed snacks unless you are losing to fast. More than 2 lbs a week.Then only one snack. It has to be within the guidelines in the book. If you don't follow the book , you will not have sucess. I do not get hungry between meals and a lot of times don't eat lunch. The eggs and bacon breakfasts keep me going all day. I could never stick to a diet before trying this diet. So far , I've lost 6 1/2 lbs. in 6 weeks. That is the average you should lose per week to be safe. I started on Atkins and lost 10 lbs the first week then nothing after that untill I changed to CAlp.Now I have steadily lost each week with no hunger enjoying foods I like at my reward meal within the guidelines . Hope this helps. In 10 weeks of dieting , I've lost 18 lbs. and feel great. Wawtigress