Protein intake refers to the amount of protein consumed through food and beverages. Proteins are essential macromolecules made up of amino acids, which are vital for building and repairing tissues, producing enzymes, and supporting immune function. Common sources of protein include meat, fish, dairy products, beans, and nuts. The recommended daily protein intake varies based on factors such as age, sex, and activity level. For most adults, a general guideline is to consume about 46 grams for women and 56 grams for men. Athletes or those with higher physical demands may require more protein to support muscle recovery and growth.