Asked by k
whst nutrients provide the main soures of calories
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The main nutrients that provide calories (energy) are the macronutrients:
- Carbohydrates — about 4 kcal per gram. Main immediate energy source. Foods: grains, fruits, vegetables, sugar.
- Protein — about 4 kcal per gram. Mainly for building and repair, but also used for energy if needed. Foods: meat, fish, dairy, legumes, soy.
- Fat — about 9 kcal per gram. Most calorie-dense; used for long-term energy storage and many body functions. Foods: oils, butter, nuts, fatty fish, avocado.
Other calorie sources:
- Alcohol — about 7 kcal per gram (not a nutrient, but provides energy).
- Dietary fiber — mostly non-digestible, but some is fermented in the gut and yields roughly 1–2 kcal per gram depending on type.
Vitamins and minerals do not provide calories.
If you want, I can explain typical calorie distribution recommendations or give examples from common foods.
- Carbohydrates — about 4 kcal per gram. Main immediate energy source. Foods: grains, fruits, vegetables, sugar.
- Protein — about 4 kcal per gram. Mainly for building and repair, but also used for energy if needed. Foods: meat, fish, dairy, legumes, soy.
- Fat — about 9 kcal per gram. Most calorie-dense; used for long-term energy storage and many body functions. Foods: oils, butter, nuts, fatty fish, avocado.
Other calorie sources:
- Alcohol — about 7 kcal per gram (not a nutrient, but provides energy).
- Dietary fiber — mostly non-digestible, but some is fermented in the gut and yields roughly 1–2 kcal per gram depending on type.
Vitamins and minerals do not provide calories.
If you want, I can explain typical calorie distribution recommendations or give examples from common foods.
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