David Duke Commentary — As most of you are are aware, I believe that humans and especially Europeans and East Asians who evolved in the Ice Ages, 
are biologically designed to consume few sugars and carbohydrates and have a diet dominated by natural animal and vegetable fats and proteins, along with vegetables rather than grains.
Dr. Lustig in these excellent videos from the University of California gives you the biological facts of how large amounts of sugars in the form of fructose, dextrose and glucose literally program the body to become overweight or obese.
The emphasis of the video is upon the evils of sugar and especially high fructose corn syrup in the obesity epidemic. Yet, Dr. Lustig points out that the obesity epidemic was accompanied by reducing fats and increasing carbohydrates. He is concentrates more on the sugar part of this problem, but it must not be forgotten that grains such as wheat, corn, barley, rye and rice are mostly composed of carbohydrates which have the same effect on the level of sugar in the blood and the damaging insulin response as does pure sugar or even candies.
As Dr. William Davis points out in the book Wheat Belly and in my interview with him on my radio program, two pieces of bread, including whole grain bread, and so-called complex carbohydrates raise the blood sugar level and insulin response to a higher than a snickers bar and probably for a longer period!
Lustig also shows the how sugars stimulate the appetite and suppress a substance called Leptin that signals our brains to be satisfied and stop eating. So, sugar actually stimulates appetite and food craving rather than satisfies it.
These are great videos, and I think that they give you an understanding of the damage sugars do to the body whether they are derived from table sugar, high fructose corn syrup, or from a plate of vegetarian-style spaghetti. Long term high levels of fructose might do the most damage because it has an especially damaging effect on the liver, much like the effective of alcoholism the liver, but all carbohydrates including so called “healthy whole grains” drive up blood sugar and create a resulting insulin response that makes us store fat and produce numerous other deleterious effects on the body.
One vital issue not adequately covered in these videos is that in addition to the fact that grains release massive amounts of sugar into the blood, grains also have unhealthy characteristics built into them as an evolutionary defense mechanism intended to harm the animals that would consume them.
Here are the main deleterious elements in grains, Lectins, Gluten and Phytates, as outlined by Mark Sisson on his Mark’s Daily Apple website which I strongly recommend. Here is Sisson’s take on these anti-nutruients
Lectins are bad. They bind to insulin receptors, attack the stomach lining of insects, bind to human intestinal lining, and they seemingly cause leptin resistance. And leptin resistance predicts a “worsening of the features of the metabolic syndrome independently of obesity”. Fun stuff, huh?
Gluten might be even worse. Gluten, found in wheat, rye, and barley, is a composite of the proteins gliadin and glutenin. Around 1% of the population are celiacs, people who are completely and utterly intolerant of any gluten. In celiacs, any gluten in the diet can be disastrous. We’re talking compromised calcium and vitamin D3 levels, hyperparathyroidism, bone defects. Really terrible stuff. And it gets worse: just because you’re not celiac doesn’t mean you aren’t susceptible to the ravages of gluten. As Stephan highlights, one study showed that 29% of asymptomatic (read: not celiac) people nonetheless tested positive for anti-gliadin IgA in their stool. Anti-gliadin IgA is an antibody produced by the gut, and it remains there until it’s dispatched to ward off gliadin – a primary component of gluten. Basically, the only reason anti-gliadin IgA ends up in your stool is because your body sensed an impending threat – gluten. If gluten poses no threat, the anti-gliadin IgA stays in your gut. And to think, most Americans eat this stuff on a daily basis.
Phytates are a problem, too, because they make minerals bio-unavailable (so much for all those healthy vitamins and minerals we need from whole grains!), thus rendering null and void the last, remaining argument for cereal grain consumption. [that grains provide you with vital vitamins and minerals]
