It is estimated that up to 7-10% of the U.S. population may have Restless Leg Syndrome. It is estimated that up to 7-10% of the U.S. population may have Restless Leg Syndrome. Dr. Brian Koo and his team at Yale University are conducting research to determine whether levels of specific hormones are increased in the blood and spinal fluid of persons with RLS. The research requires that participants undergo blood draws and a spinal tap. Dr. Koo joins Dr. Roizen to talk about this research and share some tips for relief.  Want better health and nutrition? Now you can get personalized supplement recommendations and custom vitamin packs delivered to your door! Go to PersonaNutrition.com/Roizen and take your free assessment and get 50% off your order today. - sponsor   Bonus How Your Diet Affects Your Risk for Cancer