One of the first videos I ever watched about the Paleo Diet was by a Dr. Robert Lustig from UCSF. He explains in this hour and a half video the science behind why we elimate sugars and grains from our diets. Yes, it is long, but I suggest you watch it, even if you have to watch it in 3 parts. There are sections that are extremely scientific and geeky, so if you need to, skip these parts. These are some of the topics he covers in the video:

• Explanation of the Obesity Epidemic.
• Explanation of the Type II Diabetes Epidemic.
• History of High Fructose Corn Syrup and how it should be considered a poison.
• How Sucrose and Juice Consumption contributes to obesity and diabetes.
• Why we were told erroneously not to eat fat starting in the mid 1970s.
• The difference between Pattern A LDL cholesterol(good large buoyant LDL) and Pattern B LDL cholesterol (bad small dense LDL).
• The history behind the lack of fiber in the Standard American Diet.
• The biochemical reactions behind all of this science. This is interesting because he explains what fructose does to the liver.
• How fructose is a toxic substance and ends up as stored fat in the body.