The three main nutrients that provide energy: carbohydrates, proteins, and fats.
FULL EXPLANATION
Macronutrients are the nutrients required in large amounts that provide calories and serve as the body's energy sources. They consist of carbohydrates (4 calories/gram), proteins (4 calories/gram), and fats (9 calories/gram).
Each macronutrient serves distinct functions: carbohydrates provide quick energy and fuel brain function, proteins build and repair tissues and support immune function, and fats support hormone production, nutrient absorption, and cell structure.
WHY IT MATTERS
Proper macronutrient balance affects energy levels, body composition, athletic performance, and overall health. Individual needs vary based on goals, activity level, and metabolism.
HOW TO IMPROVE
Optimize macronutrient intake by calculating individual needs based on goals, tracking intake initially to develop awareness, and adjusting based on results and how you feel.
NORMAL RANGES
General ranges: Carbs 45-65%, Protein 10-35%, Fat 20-35% of total calories. Athletes and specific goals may require different ratios.
RELATED TERMS
Metabolic Rate
The rate at which your body burns calories at rest to maintain basic life functions.
Protein Synthesis
The cellular process of building new proteins, particularly muscle proteins, in response to exercise and nutrition.
Essential Amino Acids
The nine amino acids that cannot be made by the body and must be obtained through diet.
Glycemic Index
A scale that ranks carbohydrates based on how quickly they raise blood sugar levels compared to pure glucose.
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Well-EstablishedThe cellular process of building new proteins, particularly muscle proteins, in response to exercise and nutrition.
Essential Amino Acids
Well-EstablishedThe nine amino acids that cannot be made by the body and must be obtained through diet.
Time-Restricted Eating
Emerging ResearchAn eating pattern where food consumption is limited to a specific time window each day, typically 8-12 hours.