MCT stands for medium chain triglyerides which is a type of saturated fat that is not stored easily but preferentially used for fuel.It can be found in supplement form as MCT oil and was marketed to bodybuilders for awhile as a substitute for carbs but never really caught on widespread probable due to the fear/lack of understanding of fat these days as well as the high price.As the MCT oil is usually just coconut oil anyway that is why I suggested and use myself dried coconut(plus it goes great with the apricots/trail mix).A concern I have with the Atkins diet (and I will say I have not read the book)is the food choices within the protein/fat category I hear promoted are not balanced and healthy longterm but appear designed to appeal to the masses as they can now eat all they want of certain foods.I still think the fats should be mostly unsaturated largely monosaturated with the polyunsaturates unrefined and balanced as to omega 6/3 and saturated fats held to around a quarter of total fats.All the fats I mentioned are good not bad(in unrefined form)but the proper ratio is very important and often out of balance in our food choices today due to modern agricultural techniques making it a real challenge to get the fat ratios correct.amerpie makes some good points so adapt the diet to fit your needs as to healthy food choices long term so that when you gradually add some unrefined grains back in for energy you have a balanced longterm diet. P.S. I just realized you were probably refering to my name .That refers to running with someone or another but I can't tell you who I really am lol.Seriously it came from a trail name I got from two girls "Running with the Backpack" because I liked to run down steep mtns. in full backpack gear(you can probably tell I am not an ultralightweighter).I would keep passing them in the pouring rain and then stop to rest and let them get back ahead and start over again.We had an interesting time at the shelter that evening probably part of the reason I like the Hot Springs N.C. area so much.I originally meant to type in RWTB but keyed it in wrong and couldn't figure out how to change it.