Imagine eating 12 pounds of food a day and staying thin and healthy.That is exactly what hunter-gatherer ate for millennia without any obesity or chronic diseases like heart disease, diabetes, cancer or dementia.Today, I wouldn’t advise anyone to eat 12 pounds of food each day, because the food in our society lacks one major secret ingredient that our ancestors ate in nearly all their food – fiber!You might wonder how fiber can prevent obesity and all of the chronic diseases of aging. It’s actually quite simple. It slows the rate at which food enters your blood stream and increases the speed at which food exits your body through the digestive tract. That keeps your blood sugar and cholesterol in ideal balance, quickly eliminates toxins from your gut and reduces your appetite.