Regarding vitamins; I heard Victoria Boutenko state on her dvd that the daily requirements are exaggerated due to the diet most people have, they are only absorbing a few fractions of a percent (her estimates) of the nutrients from the food, so the "requirements" are based on this lack of nutrition from food. She said the vitamin requirements are also exaggerated because people who eat a standard diet can not absorb but a small percentage of the vitamins from vitamin pills. If this is true, it would present two very serious problems with the vitamin requirements theory: 1. the requirement being based on the needs of someone with a bad diet, and 2. the "solution" (vitamin pills) amounts being based on both the lack of nutrition from that bad diet, and the lack of ability to absorb what is being taken. If those things are true, I can't see how there could be any "requirement" that could be any more accurate than simply pulling a number out of a hat and writing it down as the official number.