Judaism stresses the importance of maintaining health and not harming oneself. This means that we must do everything possible to guard our health and not take unnecessary risks. God is saying here that He is preventing disease. Since, in preventing disease, we are emulating God, prevention is the highest form of healing. We have learned that nutrition is the primary determinant of health.
Heart disease is the number one killer in the United States.
The Lifestyle Heart Trial showed that adoption of a low fat vegetarian diet along with exercise and stress reduction can actually reverse the hardening of the arteries that leads to heart attacks. They are not something to be expected as a consequence of aging but rather are the result of an aberrant lifestyle. All of the major causes of death due to cancer have been linked to diet. The risk of lung cancer, number one in both men and women because of the smoking epidemic, may be increased by animal fat consumption and is reduced by vegetable consumption. Meat consumption is a major risk factor for prostate cancer, number two in men, and fats increase its aggressiveness.