Biology
Macronutrients
Quick fact
While carbohydrates, proteins, and fats are the three primary macronutrients, alcohol also provides 7 calories per gram, yet it is not classified as a macronutrient because it is not essential for survival.
Why this is interesting
You've heard the advice to 'eat a balanced diet,' but what makes food actually balanced? The answer starts with three key families of nutrients your body demands in bulk—macronutrients.