Final answer:
The body can absorb and utilize about 20-30 grams of protein per meal, but higher amounts may be absorbed under certain conditions. Protein digestion and absorption rates also depend on the protein source.
Step-by-step explanation:
Protein absorption in the body depends on various factors, including the type of protein and individual differences. Generally, the body can absorb and utilize about 20-30 grams of protein per meal. However, some studies suggest that higher amounts of protein, up to 40 grams, may be absorbed and used for muscle protein synthesis in certain circumstances, such as after intense exercise or in individuals with higher muscle mass.
It's important to note that the body has a limited capacity to store excess protein, so consuming very large amounts of protein in one sitting may not provide additional benefits and can be excessive.
Additionally, the rate of protein digestion and absorption varies depending on the protein source. For example, whey protein is quickly digested and absorbed, while casein protein is digested and absorbed more slowly over several hours.