Peptides are short chains of amino acids, which are the building blocks of proteins. They typically consist of 2 to 50 amino acids linked together by peptide bonds. Peptides play various roles in the body, including acting as hormones, neurotransmitters, and signaling molecules that help regulate biological processes. In addition to their natural functions, peptides are also used in medicine and cosmetics. For example, certain peptides are incorporated into skincare products for their potential anti-aging effects. Researchers are exploring the therapeutic potential of peptides in treating conditions like diabetes and cancer, highlighting their importance in both health and disease management.