Biology
Core Concepts in Nutrition
Quick fact
Your body can survive weeks without food but only days without water, yet the quality of the food you eat — not just the calories — determines how well your cells build, repair, and defend themselves.
Why this is interesting
You know you need to eat to live, but have you ever wondered what your body actually does with that apple or that slice of pizza? The answer lies in a few core concepts that turn food into fuel, structure, and regulation.