Enzymes can be divided into three groups. Modern food processing techniques and all types of cooking destroy nearly 100% of the enzymes naturally occurring in food. Enzymes are completely denatured when exposed to temperatures over 118º for any length of time. The modern diet consisting of cooked and processed food is essentially devoid of active enzymes forcing the body to supply the additional enzymes needed to adequately digest the food. Ideally, the human body would be capable of producing the enzymes necessary to digest cooked and processed food and allow for the absorption of nutrients. However, with estimates of as many as twenty million Americans suffering from various digestive disorders, this is not the case.