I eat way too much sugar, as do most Westerners, and this has affected my health in a negative way. I'm tired of the mood swings, poor sleep, belly fat, the list goes on. This book explains the how and why in a very easy to understand manner, and the best part is you can make significant positive changes to your health without stupid hard to follow diets or draconian eating regiments. Felt better and lost 5 lbs within the first 5 days! Spend the money, buy it and read it.