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Home > Health Library > Major Nutrients in Food
Nutrients are substances in food that provide energy or that help your body work as it should. Nutrients are used to build and repair body tissues.
The major nutrients are protein, carbohydrate, and fat. They provide the body with energy. This energy keeps your heart beating, your brain active, and your muscles working. The energy is measured in calories.
Vitamins, minerals, and water are nutrients too. To work well, your body also needs these nutrients.
Current as of:
September 8, 2021
Author: Healthwise StaffMedical Review: Anne C. Poinier MD - Internal MedicineKathleen Romito MD - Family MedicineRhonda O'Brien MS, RD, CDE - Certified Diabetes Educator
Current as of: September 8, 2021
Author: Healthwise Staff
Medical Review:Anne C. Poinier MD - Internal Medicine & Kathleen Romito MD - Family Medicine & Rhonda O'Brien MS, RD, CDE - Certified Diabetes Educator
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