Carbohydrates are the main source of fuel for our brains and muscles. Without them, it is difficult to think clearly, or have strength or stamina. Not all carbohydrates are created equally. For example, a bowl of Special K and a bowl of oatmeal, both good sources of carbohydrates, have very different levels of fiber, especially water soluble fiber, which slows down the rate of digestion and absorption into the blood stream. The rate at which glucose enters the blood stream will affect the secretion of insulin.
Carbohydrates tend to empty from the digestive system quickly if consumed alone.
We usually eat meals that are a combination of protein, carbohydrate and fat. Protein and fat will help to slow down the absorption of carbohydrates. In conclusion, in following the ZONE diet, you would have to consume more protein than your body needs, which is not good for your kidneys. Also, you would not be consuming enough carbohydrate to maintain an adequate calorie intake. These are delicious and very nutritious foods that should be recommended for good health.