Evidence Explainer
How to read research responsibly. Every term is explained in plain English — no science degree required.
The Evidence Hierarchy
- 1. Expert opinion / theory — weakest
- 2. Cell studies
- 3. Animal studies
- 4. Human case studies / small trials
- 5. Randomized controlled trials
- 6. Systematic reviews & meta-analyses — strongest
Higher on the list doesn't mean useless — early evidence guides research — but it does mean less certainty about human benefit.
Important Safety Note
The content on Peptide Manual is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any condition. Always consult a qualified healthcare professional before making health decisions.