Dr. John Fitzgerald practices functional medicine, which focuses on blood testing to make recommendations to get at the cause of problems. For more details on him, here is his personal website: https: //drjohnfitzgerald.com/ Dr. Fitzgerald is also the Co-Founder of My Nutrition Advisor, a company that focuses on Superfood Smoothies. Dr. Fitzgerald has over 40 free videos on this website including Fat Loss seminars. http: //mynutritionadvisor.com/