Doctor Zashin from Dallas, Texas, is a Rheumatologist who is Board Certified in Internal Medicine. 20 years ago he changed his practice to specialize in autoimmune conditions which required more time to evaluate and treat. Unlike most Doctors who allow only 10 to 15 minutes per visit, he spends an hour or more as necessary to get a firm grasp of the patient's problems. He discusses the many autoimmune conditions he treats and how LDN fits in, and why diet and exercise are very important.