Deep Dives into Peptide Science
Research breakdowns, protocol design, and the latest findings from the world of peptide science. Written for researchers who care about the evidence.
What’s Actually in Your Peptide Vial? The Testing Data Is Alarming
Independent labs are testing 7,000 peptide samples a month. One-third fail basic quality checks. A Belgian study found arsenic in every sample tested. Here’s what the data shows.
Beyond Weight Loss: How Retatrutide Rewires Fat Metabolism at the Cellular Level
New metabolomics data from Eli Lilly reveals retatrutide doesn't just shrink fat. It transforms dysfunctional fat tissue into a metabolically healthy organ through enhanced fatty acid oxidation and insulin resistance reversal.
Retatrutide: The Triple Agonist That Makes Semaglutide Look Like a Warm-Up
Eli Lilly's retatrutide just delivered 24.2% body weight loss in 48 weeks — matching bariatric surgery. Three new May 2026 studies explain why hitting three hormone receptors simultaneously changes everything.
FDA PCAC July 2026: The 7 Peptides That Could Return to Legal Compounding
The FDA scheduled a July advisory committee meeting to review BPC-157, TB-500, and five other peptides for potential return to legal compounding. Here's what the meeting actually means—and what it doesn't.
GHK-Cu: The Copper Peptide That Modulates 25% of Your Genome
GHK-Cu isn't just a skincare ingredient. Genomic analysis shows it modulates over 4,000 human genes — and the research is exploding.
MOTS-c: The Mitochondrial Peptide WADA Banned Before the FDA Even Noticed
A 16-amino acid peptide encoded by your mitochondrial DNA that mimics exercise, fights obesity in mice, and was banned by WADA in 2024 — before a single human trial.
Peptides in Orthopaedics: What the 2026 AAOS Review Reveals
The American Academy of Orthopaedic Surgeons just published a comprehensive review on BPC-157, TB-500, and GHK-Cu. Here's what the evidence actually shows about peptides for injury recovery.
BLMP6: The Peptide That Hunts Down Metastatic Breast Cancer Cells
UTHealth Houston researchers engineered a peptide that targets fibulin-4 on metastatic breast cancer cells, dramatically suppressing tumors in mice. Here's how it works and why it matters.
CJC-1295/Ipamorelin and Sleep Problems: Why It Happens and How to Fix It
Started CJC-1295/Ipamorelin and now you can't sleep? You're not alone. Here's why GH secretagogues disrupt sleep and what actually works to fix it.
FDA Removes 12 Peptides from Restricted List — Compounding Access Could Return by July 2026
The FDA has removed 12 peptides from its restricted Category 2 list and scheduled PCAC meetings for July 2026. BPC-157, TB-500, KPV, and 9 others could become legally available for compounding again.
The GLP-1 Pill Wars Have Begun. Here's What Actually Changed.
Eli Lilly's Foundayo just became the first GLP-1 pill you can take without food restrictions. Novo Nordisk's oral semaglutide is heading to teenagers. The injection era is ending — but the details matter.