"Complex carbohydrates, on the other hand – release sugars much more slowly into the body and do not result in any "sudden Sugar spike" overloading the pancreas and insulin production (eventual Diabetes Mellitus) and are actually your body’s preferred source of energy."
Whopper.
Your body’s preferred source of energy is ketone bodies. Made of fat. Animal fat.
Complex carbs just take longer to make you sick and dead.
This has been proven many times by many scientists, and confirmed by those with the courage to eat zero carb diet.