Dr. Sarah L Booth, PhD, serves as the Director of the Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University and is a Professor of Nutrition at the Friedman School of Nutrition Science and Policy. She earned her BS from McGill University, her MS from the London School of Hygiene and Tropical Medicine, and her PhD from McGill. Dr. Booth is an expert in the role of fat-soluble vitamin metabolism in the prevention of chronic disease. Her doctoral research was focused on the use of indigenous plants in food and medicine. She has given presentations at a number of international conferences and traveled extensively.