PEPTIDES
The most precise tools in medicine, and the hardest to get safely.
Peptides are short signals that tell the body to repair tissue, calm inflammation, and rebalance systems that have drifted off course. They are among the most targeted tools in medicine. They are also getting harder to obtain through safe, regulated channels, which has pushed a booming and risky gray market.
Start here
Start with what peptides actually are and how they work as biological signals, then follow the series through where they help and how to think about them wisely. Four parts, built to be read in order. If peptides are new to you, this is the path.
Weight Loss is the Least Interesting Thing GLP-1s Can Do
For patients with MCAS, POTS, and chronic inflammatory illness (patients who have nothing to do with weight loss) something else is happening.
Your Body Has Been Making Peptides Since Before You Were Born
Everyone’s heard about peptides. Almost nobody has a clear answer to the most basic question: what are they? Here’s the explanation you’ve been waiting for.
When the Body Forgets How to Heal
Your body doesn’t forget how to heal all at once. It happens slowly: growth hormone pulses less, sleep gets shallower, injuries take longer, connective tissue stops holding.
The Peptide Paradox: How Restricting Safe Clinical Access Made the Wild West Bigger
The FDA restricted 19 peptides in September 2023. One month later, tirzepatide was approved for weight loss. Dr. Hartman explains what actually happened.
What peptides are, and why they matter
Peptides are short chains of amino acids, the same building blocks the body already uses to send instructions. The right peptide can tell tissue to repair, tell inflammation to settle, or tell a system to rebalance, with a precision most drugs cannot match. That precision is why interest has exploded.
It is also why access has become complicated. As regulators have restricted clinical access to many peptides, demand has moved to an unregulated gray market where quality and dosing are anyone’s guess. The safest path runs through clinical guidance, which is exactly what most patients struggle to find.
What patients describe
- Tissue and injury repair
- Inflammation
- Gut healing
- Metabolic support
- Immune regulation
- Recovery and performance
- Cognitive support
- Healthy aging
7,000+
peptides occur naturally in the human body, each one a potential signal. Only a handful have become precise clinical tools.
Everything else on peptides
Browse our library of articles on peptides and everything connected to them.
Considering peptides? Learn how to use potent substances wisely.
Peptides are potent signals, and potent tools call for quality sourcing and clinical oversight. Our Understanding Supplements page lays out how we vet what we recommend and why do no harm comes first.