Healthcare and Medicine - A wonderful video compilation of healthcare and medicine topics: Lungs, The heart, and influenza are few posted. (Khan Academy)
MERLOT - Open nutrition resources (open textbooks, reference materials, etc.)
OER Commons- Search open educational resources related to nutrition and dietetics
MedlinePlus Nutrition - Great place to start with gathering information about nutrition. Also included are videos and a tab on drugs and supplements.
MyPlate for Food Pyramid - Need help creating a diet for the little eater? This page provides ideas, plans, and activities to get even the most pickiest eater on the road to healthy eating. (USDA)