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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

What Lilly's retatrutide lawsuits mean

Eli Lilly sued six US sellers of unapproved retatrutide on 12 August 2026. Here is what the cases mean if you bought a vial or are considering one.

13 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Obesity-driven HFpEF: what the drugs do

A 2026 review maps obesity-driven HFpEF from mechanism to prescribing. Semaglutide and tirzepatide improved symptoms and exercise capacity, not survival.

13 Aug 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Semaglutide and depression: 2026 review

A 2026 meta-analysis found no significant depression risk from semaglutide, but high heterogeneity and real-world signals leave the picture unsettled.

13 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

BPC-157 and TB-500 after shoulder surgery

Animal studies link BPC-157 and TB-500 to tendon healing, but controlled human evidence for orthopaedic surgery is essentially absent.

12 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Semaglutide and body anxiety explained

Semaglutide users often report new health anxieties about muscle loss and nutrition. Here is what the research actually shows and what remains unknown.

12 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Semaglutide bloating and nausea: trial data

Nausea, bloating and diarrhoea top the side-effect list for semaglutide. Here is what the STEP trial data says about how common they are and why.

12 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

What semaglutide does to daily life in MASH

A new ESSENCE analysis puts a number on how people with MASH feel on semaglutide: a small EQ-5D utility gain, and why payers will care about it.

12 Aug 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Semaglutide and reward: what research shows

GLP-1 receptors sit inside the brain's dopamine reward circuit. Early trials suggest semaglutide may reduce craving well beyond food.

12 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Stapled semaglutide variants, explained

A new chemistry paper built stapled variants of a semaglutide fragment that last longer in serum; here is what that does and does not show.

12 Aug 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

Surgery vs semaglutide for heart outcomes

A large real-world study compared semaglutide with bariatric surgery on heart outcomes in obesity. Here is what it found and what it cannot prove.

12 Aug 2026 · PeptideMethods Editorial Team · 5 min read
Explainer

How semaglutide produces weight loss

Semaglutide works mainly in the brain, suppressing appetite via GLP-1 signalling. Here is what the STEP trials found and what stops when the drug stops.

12 Aug 2026 · PeptideMethods Editorial Team · 4 min read
Explainer

Tirzepatide in youth: first real-world data

A study of 74 youth prescribed tirzepatide at three clinics found lower blood sugar and BMI. What can the first real-world numbers actually show?

12 Aug 2026 · PeptideMethods Editorial Team · 5 min read