Start with the recommended daily allowance (RDA) for protein, which is 0.8 grams of protein per kilogram of bodyweight, says Susie, a spokesperson for the Academy of Nutrition and Dietetics.

Protein is the macronutrient du jour. To what extent can peanut butter help you reach those goals? Nutrition experts explain.

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This article was medically reviewed by Samantha Cassetty, MS, RD, a nutrition ... of protein you need depends on your age, health, and activity level. The recommended daily allowance (RDA) is ...