Celiac disease appears to be more common than once suspected and doesn't always appear as weight loss and bloody diarrhea. The upper and lower GI studies were negative. I believe my overweight patient when they tell me that they ARE on low fat diets. Complex starches are digested to simple sugars. Simple sugars in excess become the building blocks of triglycerides.
Triglycerides are the building blocks of fat.
On the other hand, consider eggs. I can't understand how one egg, with no further additional ingredients becomes a chicken, which we are taught we can eat with abandon. The same chemical components when contained in a shell are an EGG, and we are only allowed 2 per a week. They were losing weight at the rate of up to 3 pounds per week, happily and with full tummys. I was pleasantly surprised to see seniors cholesterol levels dropping to normal, and their blood pressure normalizing without additional medicines.