Nutrition

Macro Nutrients 101: Protein, Carbs, and Fats Explained

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Dr. Sarah Johnson
Jan 3, 2025 · 8 min read
Balanced Macros

Diet trends love to demonize one nutrient or another. First fat was bad, then carbs were bad. The truth? Your body needs all three macronutrients to survive and thrive.

Protein: The Builder

Protein is essential for repairing tissues, building muscle, and making enzymes. It is also the most satiating nutrient, meaning it keeps you full longer.
Sources: Meat, fish, eggs, tofu, legumes, dairy.

Carbohydrates: The Energy

Carbs are your brain and body's preferred fuel source. They aren't the enemy; simple, processed carbs are. Complex carbs provide sustained energy and fiber.
Sources: Oats, rice, potatoes, fruits, vegetables, whole grain bread.

Fats: The Protector

Fats are vital for hormone production and nutrient absorption (Vitamins A, D, E, K measure fat to be absorbed).
Sources: Avocados, nuts, olive oil, fatty fish, seeds.

Finding Your Balance

There is no "perfect" ratio, but a standard starting point is 40% carbs, 30% protein, and 30% fat. Use our Calorie Calculator to find the split that works for your specific body and goals.