American Board of Lifestyle Medicine Practice Test

The Recommended Dietary Allowance (RDA) for protein is established to meet the nutritional needs of the majority of the population. It is set at 0.8 grams of protein per kilogram of body weight for adults. This amount is considered adequate to support overall health, muscle maintenance, tissue repair, and the synthesis of enzymes and hormones necessary for bodily functions.

This guideline is rooted in research indicating that most sedentary adults require this amount of protein to maintain nitrogen balance and support general metabolic functions without excess. For individuals in specific populations, such as athletes or those recovering from illness, protein needs may be higher; however, the standard recommendation for the average adult is indeed 0.8 g/kg. This level reflects a balance that addresses the body's requirements without promoting excess protein intake, which could lead to unnecessary strain on the kidneys and other health issues.