Dr. Walker has a PhD in nutritional sciences from Penn State, an MSEd in Exercise Science and Wellness from Old Dominion University, and a BS in secondary education from Penn State.  She spent a year in a dairy research lab with Kevin Harvatine, PhD, conducting animal studies on nutrition and milk fat synthesis, after which she did her postdoctoral fellowship training at Penn State with Alison Gernand, PhD, MPH, an expert in global health, micronutrients, pregnancy, and the placenta. She is also trained as a certified Lactation Counselor, with expertise in breastfeeding education and support. Dr. Walker's two main scientific loves include lipids and milk, and she strives to use her work to make life better for families, mothers, and infants. In addition to research, Dr. Walker loves spending time with her three kids, making music, being outside, and learning about different cultures and cuisines.

Sarah Scott is a fourth year undergraduate student at Penn State. She is majoring in biology with a minor in nutritional sciences on the path to medical school. Her main interest is nutritional aspects of medicine as well as the impact of supplementation on the health of pregnant women. Sarah's thesis project focuses on measuring the impact of vitamin D supplementation during pregnancy and lactation on the cholecalciferol concentration in the breast milk transferred to the infant. It is based on a parent trial conducted in Bangladesh that was focused on measuring the impact of supplementation on length-for-age z score for infants at one year of age. She is a scholar in the Schreyer Honors College and has been on the Dean’s List each semester. Outside of academics and research, Sarah enjoys leading the clarinet section of the Penn State Blue Band, tutoring physics students, and beekeeping.  

Zoe McMahon is a fourth year undergraduate student at Penn State. She is majoring in nutritional sciences, nutrition and dietetics pathway, with a minor in psychology.  She is currently on the path to becoming a registered dietician. Her main interests are in clinical nutrition, pediatric nutrition, and maternal health, and she is working on analyzing fatty acid profiles in maternal blood from participants who are exclusively breastfeeding, compared with those who are partially breastfeeding. She has been on the Dean's list each semester in the College of Health and Human Development. Outside of academics and research, Zoe works as an assistant in the Cardiometabolic Research Kitchen at Penn State, and enjoys traveling, cooking, and volunteering with the Student Anti-Hunger Club.