Guide

The Atwater factor for protein is 4 kilocalories per gram of digestible protein, used to estimate metabolizable energy in food and diets.

On average, protein makes up around 16–20% of body weight, mainly in muscles and organs, with small shifts based on age, sex, and training.

On average, U.S. adults take in around 70–100 grams of protein per day, which already meets basic daily protein needs for most adults.

A medium avocado gives around 3–4 grams of protein, so it helps round out meals built on beans, eggs, grains, or other protein sources.

The Atwater factors for carbohydrate, protein, and fat assign 4, 4, and 9 kilocalories per gram to estimate usable food energy.

One pound of Atlantic salmon offers 90 to 100 grams of complete protein, with small shifts between raw, cooked, farmed, and wild fillets.

Across India, average protein intake has reached about 62–63 grams per person each day, close to basic needs but still uneven across groups.

One average large egg supplies about 6–7 grams of complete protein, split between the egg white and the nutrient rich yolk.

Average human protein intake usually sits near 0.8 grams per kilogram of body weight, but many adults benefit from a slightly higher daily target.

A typical cooked skinless chicken breast delivers around 30 to 55 grams of protein, depending on weight and cooking method.