Final answer:
The RDA for protein assumes that protein will be consumed with adequate energy and other essential nutrients. The RDA aims to satisfy the dietary needs of 97.5% of the population and is based on the Estimated Average Requirement (EAR). Protein quality is determined by its amino acid content and digestibility.
Step-by-step explanation:
In setting the Recommended Dietary Allowances (RDA) for protein, the committee assumed that protein will be consumed together with adequate energy and other nutrients. This is based on the idea that when individuals have appropriate energy intake and a balanced diet containing other essential nutrients, their protein needs are most accurately predicted and met. The RDAs are developed to cover the needs of 97.5% of the population and are based on the Estimated Average Requirement (EAR), which satisfies the requirements of 50% of the population. The nutritional value of protein is contingent on its content of essential amino acids and its digestibility. Vegetarian and vegan sources of protein are often considered lower quality due to the absence of one or more essential amino acids. Therefore, individuals with these dietary patterns must take particular care to consume a variety of protein sources to meet their amino acid needs.