Richard Hayes
Editor-in-Chief, PeptideMark
Richard founded PeptideMark to create an independent, evidence-based peptide reference free from vendor influence. He oversees editorial standards, content strategy, and ensures every claim on the site is properly cited and evidence-rated. His work focuses on translating complex pharmacological research into accessible, well-sourced educational content.
Areas of Focus
Peptide pharmacologyEvidence-based health contentFDA & regulatory analysisClinical trial interpretationScientific publishing standardsWADA prohibited substances
Compound Profiles (20)
Evidence-rated compound profiles reviewed and approved by Richard.
BPC-157·healing recoverySemaglutide·weight lossTirzepatide·weight lossTB-500·healing recoveryCJC-1295·growth hormoneIpamorelin·growth hormoneGHK-Cu·skin hairPT-141·sexual healthSermorelin·growth hormoneTesamorelin·growth hormone
View all 20 compounds Guides (16)
- What Are Peptides? A Science-Based Introduction
- Peptides for Weight Loss: What the Research Shows
- FDA Regulation of Peptides: What You Need to Know
- Understanding Our Evidence Ratings
- Growth Hormone Secretagogues Explained
- GLP-1 Receptor Agonists: From Semaglutide to Retatrutide
- How to Reconstitute Peptides: Step-by-Step
- Peptide Storage & Handling Best Practices
- How to Read Peptide Research Papers
- Peptide Therapy: What You Need to Know Before Starting
- Peptides for Muscle Growth: What the Research Actually Shows
- Are Peptides Safe? What the Evidence Shows
- Peptide Injection Sites: Subcutaneous vs Intramuscular Guide
- Peptide Half-Life Reference: Dosing Frequency & Duration
- Peptide Needle & Syringe Guide: Gauge, Length, and Sizing
- Peptide Dosing Timing: When to Inject and Why It Matters
Educational Articles (31)
- Tirzepatide for Weight Loss: What the Clinical Trials Actually Show
- Peptides for Women: Safety, Benefits, and What’s Different
- Peptide Stacking: What the Research Actually Shows
- Oral vs Injectable Peptides: Bioavailability Guide
- Peptide Half-Lives Explained: Why Duration Matters
- Peptide Therapy Cost Guide 2026: What to Expect
- Peptides vs SARMs vs Steroids: Key Differences Explained
- The Complete History of the FDA Peptide Crackdown
- Compounding Pharmacy Regulation: What Changed and What It Means for Peptides
- The GLP-1 Market: How Semaglutide and Tirzepatide Created a $50B Industry
- Peptide Research Funding: Who Is Paying for Clinical Trials?
- WADA, Sports, and Peptides: The Complete Anti-Doping Guide
- Telehealth Peptide Prescriptions: How Online Clinics Are Changing Access
- Insurance Coverage for Peptide Therapy: A State-by-State Analysis
- How Peptides Are Manufactured: From Lab Synthesis to Clinical Grade
- International Peptide Regulation: US vs EU vs Australia vs Russia
- The Science of Peptide Stability: Storage, Reconstitution, and Degradation
- Are Peptides Safe? Side Effects, Risks & What the Evidence Shows
- Best Peptides for Muscle Growth & Recovery: What the Research Shows
- Best Peptides for Anti-Aging & Longevity: What the Evidence Actually Shows
- Peptides for Hair Growth & Hair Loss: What the Research Actually Shows
- Peptides for Gut Health & IBS: Evidence Review 2026
- Peptides for Sleep & Recovery: Clinical Evidence 2026
- Peptides for Cognitive Function & Brain Health: Evidence Review 2026
- Anti-Inflammatory Peptides: Evidence-Based Review 2026
- GHK-Cu: Why This Copper Peptide Is the Fastest-Growing Peptide Search of 2026
- How AI Is Revolutionizing Peptide Drug Discovery in 2026
- CagriSema Explained: Why Novo Nordisk Is Combining Semaglutide With Amylin
- How Long Do Peptides Take to Work? A Compound-by-Compound Timeline
- Are Injectable Peptides Safe for Anti-Aging? What the Evidence Actually Shows in 2026
- Do Peptides Build Muscle? What the Science Actually Says in 2026
News & Analysis (84)
- Stanford Discovers "Natural Ozempic" Peptide That Cuts Appetite 50% Without GI Side Effects
- New Study: Tirzepatide Causes More Muscle Loss Than Semaglutide in 8,000-Patient Analysis
- Semaglutide Fails Alzheimer's Trial: What the EVOKE Results Mean for GLP-1 Brain Claims
- MK-677 (Ibutamoren) Legal Status and FDA Approval in 2026: The Complete Picture
- FDA Sets July 23–24 Meeting to Review BPC-157, TB-500, and 5 More Peptides for Compounding Access
- RFK Jr. Announces 14 Peptides Moving Back to Category 1: What It Means
- Ozempic Side Effects: What 5 Years of Real-World Data Actually Shows
- Oral Wegovy Pill Gets FDA Approval: What You Need to Know
- Retatrutide Phase 3: Triple Agonist Delivers 71 lbs Average Weight Loss
- Semaglutide Could Cost $3/Month: Patent Expiry and Generic Timeline
- Tirzepatide vs. Semaglutide: What the Head-to-Head Trials Show
- FDA Category 2 Peptide Ban: The Complete Guide
- How to Prevent Muscle Loss on Ozempic and Other GLP-1 Drugs
- "Ozempic Face" Explained: What Causes It and What Helps
- Peptide Compounding in 2026: What Patients Need to Know