6Abundant Health in a Toxic World The American Cancer Society, the American Heart Association, and others all claim that their diseases are mainly caused by diet, nutrition, lifestyle, and toxic exposures. Sadly, they would rather send you for drugs and surgery than address these causes. If you are someone who would rather eliminate the causes and watch the symptoms go away by themselves, this book is for you. David specializes in reducing or eliminating causes to help his patients and students improve their health. Drugs are generally suppressors of symptoms while the condition gets worse.