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✦ PeptideWorld Pinned · Always current

Peptide news — April to May 2026 roundup

Publishing Mon 25 May 2026 · 4-week digest · fortnightly cadence
Read the full digest Mon 25 May → View past digests →
✦ PeptideWorld Archive
TRT & Hormonal Health
✦ My Protocols · Members
My Wolverine Stack — 12 weeks on BPC-157 + TB-500
What I ran, why I ran it, what I noticed and what the blood work showed. My personal experience with the most popular recovery protocol.
Coming soonMembers only →
TRT & Hormonal
Modern TRT — SubQ Test Cyp, small frequent doses, and the line between medicine and a cycle
What modern evidence-based TRT actually looks like. The four dose categories — TRT, gym aesthetics, bodybuilding, powerlifting — and which is actually which.
1 May 2026Read →
TRT & Hormonal
TRT blood work — what to test, when, and what the numbers mean
Every marker, every time point, and what each result tells you about how your therapy is working.
28 Apr 2026Read →
TRT & Hormonal
Gonadorelin on TRT — why it matters and what it does
TRT suppresses the HPT axis and causes testicular atrophy. Gonadorelin prevents this. The mechanism and the evidence.
5 May 2026Read →
TRT & Hormonal
TRT side effects — what's real, what's manageable, and what's myth
Haematocrit, testicular atrophy, hair loss, oestradiol, cardiovascular risk. What the evidence actually says.
12 May 2026Read →
TRT & Hormonal
How to talk to your GP about low testosterone
What to ask for, how to frame your symptoms, which tests to request, and what to do if the NHS route is difficult.
19 May 2026Read →
TRT & Hormonal
BPC-157 as a TRT companion
Why men on testosterone add BPC-157. Gut integrity, connective tissue, inflammation — what it does and why it fits.
26 May 2026Read →
Peptide Research
Longevity
Klotho — the anti-ageing protein the body stops making
Declines 40% between ages 30 and 70. What it does, what happens when it falls, and what the research shows.
14 Apr 2026Read →
Immune
LL-37 — the body's own antibiotic peptide
Every human cell produces it. It kills bacteria, modulates inflammation, promotes wound healing. Here's what we know.
7 Apr 2026Read →
Mitochondrial
Humanin — the peptide hiding inside your mitochondrial DNA
Discovered in Alzheimer's patients in 2001. Encoded in mitochondrial DNA. Neuroprotective, cardioprotective, declining with age.
31 Mar 2026Read →
Longevity
Thymalin — Khavinson's 12-year lifespan study
A thymic peptide extract. A 12-year human follow-up. Reduced cancer incidence and extended survival. Under-cited in the West.
24 Mar 2026Read →

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Pep IQ is a UK-based peptide intelligence platform. We document what is known about the peptides the human body produces — and loses with age — with the protocols and research context to make that information usable.

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71 compound entries. 20 protocol references. A personal tracker. And a research blog that adds one new compound or clinical topic every week. Updated continuously as the science moves forward.

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Every compound entry is built from published research. We document what the studies show — not what the community wishes they showed. Where evidence is limited, we say so clearly.
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