Where do you usually buy food? Have you thought about the ways that the choices available to you at that gas station, superstore, farmers' market, or grocery store affect how you eat and how healthy …
Nutrition epidemiologists like Alison Gustafson, a registered dietitian, look at the ways the food we eat affects our health and physical activity. They study biology, nutrition, and biostatistics as well as epidemiology, which examines diseases and how they spread. And they help develop ways of improving the diets of large groups of people.