Foundations
What are Peptides?
Peptides are short chains of amino acids — the same building blocks that make up proteins. If proteins are long, complex sentences, peptides are the shorter “words” your body uses to communicate and regulate important processes.
Your body already makes thousands of peptides naturally. They act as:
- Messengers that tell cells what to do
- Hormones that regulate things like blood sugar and hunger
- Signals involved in repair, growth, and immune response
Scientists also create synthetic peptides in the lab. These are chemically identical or intentionally modified versions used in research settings to study how the body works, explore new pathways, and better understand biological processes.
Researchers use peptides to study:
- Cell signaling
- Metabolism
- Tissue repair
- Immune function
- Neurological pathways
Peptides vs. Proteins
- Peptides: 2–50 amino acids
- Proteins: 51+ amino acids, usually folded into complex shapes