This excellent learning CD reviews each of the body systems with colorful pictures of each one. Each body system requires a specific mineral element to keep it healthy. For example, the skin or integumentary system needs silicon, the thyroid needs iodine, the digestive tract needs magnesium. This CD shows the system and tells the mineral element needed for that system to be healthy and the foods or herbs necessary to acquire that mineral. Pictures of the foods and herbs are shown. It teaches us to become detectives as we observe the body to identify from symptoms which body system or systems are out of balance. It shows pictures of real people and the many health conditions that occur when each system is out of balance and provides the foods, herbs, vitamins, and minerals necessary to rebuild and repair the system so the ailment can heal. This CD is great for natural health practitioners to help them identify health conditions and know which foods, herbs, or nutrients are needed that may help these conditions to reverse and go away.