Protein powders 101

Protein is necessary for the body's muscle, bone, skin, and hair cells to grow and repair. Protein is made from more than 20 building blocks called amino acids. Our bodies can make some of amino acids, but others must come from food, making protein a crucial part of a healthy diet. Meat, poultry, seafood, beans, eggs, cheese, tofu, nuts, and seeds are rich protein sources.