What you eat is not the issue, here.
Good nutrition is a combination of eating, digesting and absorbing the right foods.
Many of foods that humans eat are cooked, recooked, and then warmed up. The result is an almost total loss of enzyme activity in the food. Some nutrition researchers feel that this loss in enzyme activity prevents optimum digestion and absorption of nutrients. Reduced digestive enzyme activity limits our ability to obtain all the necessary nutrients from our food. Eating foods that have enzyme activity or consuming food enzyme supplements can positively affect the entire digestive process.