Tuesday, April 21, 2026 Issue No. 047 Last Updated 14 Minutes Ago
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Issue No. 047 Tuesday, April 21, 2026 Vol. 3 · Weekly Edition
WellnessWire
1,247 Stories Published Since 2023 Health, With the Receipts.
GLP-1

The GLP-1 Era Has Just Begun

A class of drugs built for diabetes has quietly become the largest pharmacological intervention in modern weight management. The next decade will decide whether that story ends in medicine — or in marketing.

Anya Rao April 21, 2026 12 min read 284
A riso-textured illustration of a rising sun over layered green foliage and blue water — the editorial cover image for the GLP-1 feature.
Illustration by Mara Kell for Wellness Wire Fig. 01 / The cover image
Reviewed by Dr. Elena Marquez, MD Verified by the Wellness Wire Medical Review Board · April 21, 2026
BREAKING FDA updates compounding guidance for semaglutide and tirzepatide — effective May 1 TRIAL Phase 3 results for retatrutide published in NEJM — 24.2% mean weight loss at 48 weeks PRICE Compounded tirzepatide drops 14% month-over-month as supply tightens ANALYSIS The incretin pipeline: five drugs to watch after retatrutide BREAKING Eli Lilly settles second compounding lawsuit in Texas TRIAL Rapamycin in healthy adults — longest human trial enters year 3 PRICE NAD+ IV clinics post first quarterly decline in 18 months ANALYSIS The telehealth-pharmacy merger wave: who buys whom next
A riso-textured illustration of a swimmer in a red polka-dot swimsuit, poised on a diving board against a deep-blue sky — the editorial image for the Semaglutide long read.
The Long Read

What We Still Don't Know About a Decade on Semaglutide

Ten years of published data. Hundreds of thousands of patient-years of exposure. And yet the questions that matter most to the people on these drugs — what happens to muscle, to bone density, to the brain, to the hunger set point when you stop — have not been answered by anyone with an incentive to ask them. This is a reader's map of what we have, what we don't, and what the next decade of evidence needs to look like.

Dr. Sarah Chen-Whitfield
Senior Science Editor · April 20, 2026 · 28 min read
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The Brief · Newsletter

The Brief, every Tuesday.

One essay, three studies worth your time, and the week in metabolic medicine. Written by our editors. 5-minute read. No sponsors in the editorial — ever.

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Issue 046
What Happened When We Surveyed 1,200 GLP-1 Patients
Issue 045
The Compounding Deadline: Three Things to Know
Issue 044
Rapamycin, Year Three: the Data Is In

Original Research

Self-reported side effects among GLP-1 patients n = 1,247
Nausea 62%
Fatigue 44%
Constipation 38%
Loss of muscle mass 27%
Hair thinning 21%
Mood changes 18%
Sleep disturbance 14%
First-party data · Survey

We surveyed 1,200 GLP-1 patients about side effects. Here's what they said.

n = 1,247 · Fielded Feb 4 – Mar 12, 2026 · Online panel, 48-state recruit, stratified by drug + dose

Methodology →
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