A peptide is a short chain of amino acids (the building blocks of proteins) that are linked together by peptide bonds. Think of peptides as small proteins that act as signals in the body, telling cells what to do.

Simple way to think about it

• Amino acids → individual building blocks

• Peptides → short chains of amino acids

• Proteins → long, complex chains of amino acids

So peptides sit between amino acids and full proteins in size.

What peptides do in the body

Peptides act like messenger molecules that control many biological processes, including:

• Hormone production

• Tissue repair and healing

• Muscle growth

• Fat metabolism

• Immune system regulation

• Skin and collagen production

• Brain signaling

Examples of well-known peptides

Some peptides are actually hormones or signaling molecules, such as:

• Insulin – regulates blood sugar

• Oxytocin – involved in bonding and childbirth

• Glucagon – helps regulate glucose

• Collagen peptides – support skin and joints

Where peptides come from

Peptides can be:

• Naturally produced in your body

• Derived from foods (like collagen peptides)

• Synthesized in labs for medical or therapeutic use

Peptides in medicine and wellness

Peptides are increasingly used for things like:

• Healing and tissue repair

• Hormone support

• Anti-aging treatments

• Fat loss and metabolism

• Athletic recovery

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