Dr. Joel Wallach discussed the human body's innate ability to heal itself through natural means and various minerals and supplements. He contends that diseases and ailments are the result of dietary deficiencies, rather than due to genetic causes. "I'm trying to teach people to take care of themselves. In my book, Let's Play Doctor, I teach people how to do their own laboratory work," getting their own test strips for blood and urine, and then how to analyze the information, he shared. "If we keep depending on doctors and the insurance system, medical doctors will find a way to take every penny out of your insurance, and to treat you for 25 years, when there's a cure in three months," he remarked.

In one instance, a group of patients were being treated long term for macular degeneration by an ophthalmologist, who doubted that Wallach's treatments could make any difference in what he considered an age-related disease. So, as part of a wager, the eye doctor let Wallach treat 27 of his patients who were all considered legally blind. Wallach gave them specified supplements over a 90-day period, and at the end of the trial, all 27 could read 20-20, and the skeptical eye doctor became a convert, Wallach reported. People tend to have specific ailments because of the deficiencies in minerals/nutrients in their area-- for instance in the Great Lakes, locals have more thyroid problems, because there is low iodine in the region, he explained.