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Biology

Core Concepts in Nutrition

Quick fact

The human body can survive weeks without food, but only days without water—yet the quality of food matters just as much as quantity: a diet lacking essential nutrients can cause disease even with enough calories.

Why this is interesting

You eat every day, but have you ever wondered why some foods leave you energized while others lead to fatigue? The answer lies in a few core nutrition concepts that govern how your body uses every bite.