[garyclarke27]

Not so, you certainly don't need to eat sugar, too much sugar is poisonous and if usage is prolonged, causes insulin resistance and Type 2 diabeties. Starches are not much better, since they are so easily converted to sugars.

Most high energy usage organs inc the brain are quite happy burning ketone bodies - made from fat, in fact the heart prefers them. A few brain and organ functions do require some glucose, but these can be made from protein, better though to eat some healthy carbs such as spinach, for this. Most Type 2 diabetes sufferers can be cured by a strict low carb high fat diet. Healthiest fats are saturated grass fed cow's butter and lard, coconut oil or mono saturated olive oil - contrary to most people's belief. Unsaturated vegetable oils are very dangerous they are unstable and easily become poisonous, margarine is evil.