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Biology

Core Concepts in Nutrition

Quick fact

Your body can survive without food for weeks, but without water, only days—yet the balance of macronutrients and micronutrients determines your long-term health more than the total amount of food you eat.

Why this is interesting

You eat every day, but have you ever wondered what your body actually does with that food—and why some foods leave you energized while others just leave you tired?