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Daily evidence-led peptide research, regulatory news, expert digest and explainers. Every claim sourced; no AI tells.

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Explainer

GIP receptors and brain dopamine in mice

A 2026 mouse study found GIP receptors in the lateral septum, where GIP and GLP-1 agonists cut electrically evoked dopamine release.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

GLP-1 Prescribing Without an Indication

A US records study of 92 million adults found GLP-1 prescribing without a documented indication rose 15-fold, and 35.1% of recipients had a normal BMI.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Semaglutide vs orforglipron: who paid?

A new indirect comparison says oral semaglutide beats orforglipron on weight loss. Five of its eight authors work for Novo Nordisk. Here is what it shows.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Orforglipron vs oral semaglutide in T2D

ACHIEVE-3 put the orforglipron pill head to head with the oral semaglutide pill in type 2 diabetes. Orforglipron won on HbA1c and lost on tolerability.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Trial readouts

Black-Market Retatrutide vs Trial Evidence

A retatrutide label does not transfer Lilly's trial results to an unknown online vial. Here is what the public evidence supports.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Semaglutide access and health inequity

Semaglutide works. Access does not follow need. Here is what fill-rate, pricing and policy data show about who actually gets treated, and who does not.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Semaglutide and wet AMD: signal vs proof

A 2026 study flagged semaglutide among five drugs with raised wet AMD reporting. Here is what that kind of signal can and cannot tell you.

23 Sept 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Tirzepatide vs Semaglutide Side Effects

A new adverse-event reporting study compares tirzepatide and semaglutide, but raw report counts alone cannot show which drug is riskier.

23 Sept 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

What is food noise? Five theories

A 2026 Appetite review says food noise still has no settled definition. Here are the five theories behind it, and what the GLP-1 survey data shows.

23 Sept 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

What Obesity Drug Cost Models Show

A systematic review of economic evaluations finds anti-obesity medicine cost-effectiveness varies by setting, price, assumptions, and comparator.

22 Sept 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

BPC-157 for a running injury: evidence

A runner's forum question reflects real interest in BPC-157, but animal studies and anecdotes do not establish safe or effective injury treatment.

22 Sept 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Why a peptide list is not a treatment plan

A community peptide list can show what is being discussed, but it cannot establish safety, evidence or suitability for an individual.

22 Sept 2026 · PeptideMethods Editorial Team · 4 min read