#387 - AMA #83: Peptides—evaluating the science, safety, and hype in a rapidly growing field
In this AMA, Peter Attia explores gray-market peptides, providing a clear framework for evaluating any peptide or drug. He distinguishes FDA-approved therapeutics from loosely regulated 'biohacking' peptides, examining evidence, safety, and regulatory challenges.
Deep Dive Analysis
13 Topic Outline
Defining Peptides: Basic Biology and Function
Distinguishing Peptides: FDA-Approved vs. Gray Market
Framework for Evaluating Any Drug or Peptide
Categorizing Peptides into Four Buckets
Introduction to Peptide Case Studies
SS-31: Mechanism, Claims, and Safety
Melanotan-II: Receptor Activity and Side Effects
CJC-1295: Growth Hormone Signaling and Dosing
BPC-157: Origin, Mechanisms, and Evidence
Role of Patents and Incentives in Drug Development
Gray Market Operations and Regulatory Oversight
Challenges with Oral Peptides and Absorption
Future of Peptide Therapeutics and Potential Expansion
5 Key Concepts
Peptide
A peptide is a short chain of amino acids, typically up to 60-100, that are naturally produced in the body and serve essential functions as signaling molecules, neurotransmitters, and antioxidants. Examples include endorphins, insulin, and GLP-1.
FDA-Approved Peptide Therapeutics
These are peptide molecules, like insulin or GLP-1 drugs, that have undergone rigorous testing and received official approval from the FDA for specific medical indications, ensuring their safety and efficacy for human use.
Gray Market Peptides
Often referred to as 'biohacking' peptides, these are various therapeutic compounds touted for benefits like longevity, beauty, or tissue healing, but they lack FDA approval and are typically administered via injection, sold as 'research use only'.
Mechanism of Action
This refers to a defined course of mechanistic steps that logically lead to an intended effect of a drug or supplement. A clear mechanism is a critical requirement for FDA approval, with very few approved drugs lacking this understanding.
Research Use Only (RUO)
A designation used for gray market peptides, indicating that they are not approved for human use. While their sale isn't technically illegal under this label, it's widely understood that these compounds are being used by people despite the lack of regulatory oversight.
5 Questions Answered
Peptides are short chains of amino acids that the body naturally produces, acting as signaling molecules, neurotransmitters, and more. They can also be synthetically produced to mimic these natural functions for therapeutic purposes, like insulin.
FDA-approved peptides have undergone rigorous testing and are approved for specific medical uses, while 'biohacking' peptides are unregulated, often sold on the gray market, and lack scientific consensus on their efficacy and safety for human use.
You should ask if there's a viable mechanism of action, what is known about its safety and efficacy in humans, how to weigh its risks against benefits, and if there are any legitimate, approved alternatives available.
A clear mechanism of action provides a defined course of mechanistic steps that logically lead to an intended effect, and its absence should lead to skepticism, as less than 3% of FDA-approved drugs lack a known mechanism.
Many popular peptides are sold on the gray market because they lack FDA approval for human use, often marketed as 'research use only' to circumvent strict regulatory oversight, despite being widely used by individuals.
5 Actionable Insights
1. Demand Clear Mechanism of Action
Be highly skeptical of any drug or supplement if its mechanism of action is not clearly defined, as over 97% of FDA-approved drugs have a known, defined course of mechanistic steps.
2. Weigh Risks Against Benefits
Always carefully weigh the potential risks and side effects against the intended benefits of any substance, reserving higher-risk interventions for situations where the risk of not taking action is sufficiently high.
3. Prioritize Approved Alternatives
Before considering gray market peptides, investigate if legitimate, FDA-approved alternatives exist that might offer a better-understood risk and benefit profile for your intended purpose.
4. Beware Shifting Benefit Claims
Be wary of peptides whose alleged benefits frequently change or expand over time, as this ‘shifting goalposts’ behavior can indicate a lack of genuine efficacy and a fabricated narrative.
5. Understand ‘Research Use Only’
Recognize that the ‘research use only’ designation for gray market peptides means they are not approved for human consumption, despite being widely used by people, and lack regulatory oversight for human safety.
3 Key Quotes
If there's no mechanism of action, you should be very skeptical of a drug or supplement.
Peter Attia
Nobody would ever suggest you just take antibiotics willy-nilly. That would not make sense to ward off any potential bacteria in the room.
Peter Attia
We don't do anything in moderation on this podcast, except for moderation.
Peter Attia
2 Protocols
Framework for Evaluating Any Drug or Peptide
Peter Attia- Is there a viable mechanism of action that logically leads to an intended effect?
- What do we know about the downstream effects and efficacy of this in healthy individuals or the target patient population?
- What do we know about the safety profile in animals and, eventually, in humans, considering dose and usage patterns?
- How do the potential risks of side effects weigh against the intended benefits of the drug?
- Are there legitimate, FDA-approved alternatives available for the intended purpose?
Four Buckets for Peptide Evaluation
Peter Attia- Bucket 1 (No Compelling Case): No viable mechanism of action, no human data or negative human data, and frequently shifting claims for alleged benefits.
- Bucket 2 (Abandoned Clinical Trials): Has a viable mechanism, but never entered or was abandoned in human clinical trials, with no continued interest from pharmaceutical companies.
- Bucket 3 (In Trials/Approved for Other Uses): Has a viable mechanism, may be in human clinical trials or approved for indications other than the popular use, with safety and efficacy data (though not necessarily for the specific popular use), and no approved version for the current popular use.
- Bucket 4 (Stolen FDA-Approved Drugs): Peptides sold as exact replicas of approved drugs, but illegally via 'research purposes only' means.