Kristina von Castel-Roberts has a PhD in Human Nutrition from the University of Florida focusing on vitamin B12 nutrition and metabolism. She is currently conducting obesity research as well as teaching nutrition. Her teaching focuses on basic nutrition, oral health nutrition for dentistry, and nutrition in health care and public health. In addition to vitamin B12 nutrition and obesity management, she is interested in nutrition and vegetarianism, omega-3 fatty acids, nutrition education in health care, and nutrition for disease prevention. Kristina has been at the University of Florida since 1994 as a student, and instructor and a researcher. She has worked in several areas including Animal Science, in which she has a Bachelors degree. When she is not busy at UF, she enjoys spending time with her husband, family and friends, the wonderful Florida weather, and training her horses and dogs.