The small intestine, specifically the duodenum and jejunum, absorbs the majority of protein.
Proteases (proteolytic enzymes) found in the stomach's gastric juice, such as pepsin, and the small intestine's pancreatic juice, such as trypsin and chymotrypsin, break down dietary proteins.
Protein absorption refers to your body's capacity to break down an animal or plant protein sources into individual building blocks (amino acids), then use those building blocks to generate the proteins your body requires for daily activities such as muscle maintenance and improvement
Effects of high protein absorption
Excess protein is normally retained as fat, whereas amino acid surpluses are eliminated.
This might result in weight gain over time, particularly if you consume too many calories while attempting to boost your protein intake.