Everyone should have a complete physical every year or two. Fluoride toothpaste works so well that water fluoridation is no longer important. It is difficult for busy people to eat a balanced diet. People intelligent enough to graduate from college are unlikely to be victimized by quackery. Accreditation of a school indicates that a regulatory agency considers its teachings sound.
Cigarette smoking is the leading cause of preventable death in the United States.
Sugar is a major cause of hyperactivity and other childhood behavioral problems. No special training is legally required to offer counseling to the public. Taking antioxidant vitamins has been proved to protect against heart disease, stroke, and cancer. Homeopathic remedies are a safe and effective alternative to many drugs that doctors prescribe. Taking large daily doses of vitamin C can cut the incidence of colds in half.