Protein intake is crucial for the body to build and repair tissues, as well as to produce enzymes, hormones, and other vital molecules. The amount of protein required depends on factors such as age, gender, weight, physical activity level, and health status. The current recommendation for adults is to consume at least 0.8 grams of protein per kilogram of body weight per day. However, athletes, pregnant women, and individuals with certain medical conditions may require higher amounts of protein.