YouTube & Expert Fact Checks

What experts say on YouTube vs what the clinical data actually shows.

Popular videos about retatrutide and GLP-1 drugs fact-checked claim-by-claim against published clinical trial data. When the video gets something right, we show the receipts. When it doesn't, we show that too.

Related topic hubs

Every verdict at a glance

Each creator's strongest claim, biggest error, and our overall accuracy read — sorted most accurate first. Tap any name for the full claim-by-claim breakdown.

Adrian Crook
Creator (experience diary) · YouTube
Mostly accurate

A transparent 6-month grey-market diary that largely aligns with clinical data, including DEXA-confirmed muscle loss and a plausible PPI interaction warning.

Read the full fact-check →
Andrew Huberman
Andrew Huberman
Stanford neuroscientist · Podcast
Mostly accurate

Most of Huberman’s claims are accurate or well-supported, though he overstated the speed of weight loss and his guest’s "fewer side effects" claim is unsupported.

Read the full fact-check →
Dave Nap
On The Pen host · YouTube
Mostly accurate

Nap's reporting is largely accurate and well-sourced, and he responsibly warns that cross-trial comparisons of UBT-251 and retatrutide are unreliable.

Read the full fact-check →
Dr. Alex Tatem
Board-certified urologist · YouTube
Mostly accurate

Very accurate overall — his mechanism, Phase 2 data, comparisons, and side-effect numbers match published sources, with only the dysesthesia signal omitted.

Read the full fact-check →
Dr. Amin Hedayat
Dr. Amin Hedayat
Triple board-certified pathologist · YouTube
Mostly accurate

One of the more accurate and well-sourced YouTube analyses; the main overstatement is the heart-rate figure, with anhedonia framed as plausible but unconfirmed.

Read the full fact-check →
Dr. Ashley Froese
Dr. Ashley Froese
Physician · YouTube
Mostly accurate

Dr. Froese's explanations are generally well-supported by published data, with only minor inaccuracies like conflating lean mass with muscle and misstating dose arms.

Read the full fact-check →
Dr. Dan
Obesity medicine · YouTube
Mostly accurate

Dr. Dan's presentation of the Phase 2 data is largely accurate and well-balanced, with only the underweight-BMI claim overstated.

Read the full fact-check →
Dr. Kevin Joseph
Physician · YouTube
Mostly accurate

One of the more accurate physician-led overviews; the main errors are misattributing the 24-week maximum to the 8mg dose and a fewer-side-effects prediction Phase 3 disproved.

Read the full fact-check →
Colin Watson
Weight loss coach · YouTube
Mixed

His top-line potency claim holds, but he garbles the receptor mechanism, wrongly denies side effects, overstates muscle preservation, and sells the product he reviews.

Read the full fact-check →
David DeMesquita
Creator (injection how-to) · YouTube
Mixed

His reconstitution and injection technique is broadly sound, but his sub-clinical dosing and grey-market product lack any supporting clinical evidence.

Read the full fact-check →
Dr. Jones DC
Chiropractor · YouTube
Mixed

Jones gets most headline trial numbers right, but his heart-rate claim is significantly overstated, his Phase 2 threshold breakdown has errors, and his food-chatter framework is anecdotal.

Read the full fact-check →
Gary Miller
Powerbuilding coach · YouTube
Mixed

Miller's mechanism claims are largely supported, but he badly understates the weight loss, overstates muscle preservation, and promotes unstudied grey-market peptide stacks.

Read the full fact-check →
Michael Morelli
Fitness coach · YouTube
Mixed

Morelli's triple agonist mechanism is broadly correct, but he significantly overstates muscle-building and cognitive claims and misleadingly promotes grey-market peptides and non-standard dosing.

Read the full fact-check →
Nick Trigili
Bodybuilding coach · YouTube
Mixed

Mostly accurate on the TRIUMPH-4 headline data, but his 80% dropout claim is substantially wrong and his unsupervised grey-market peptide stack is entirely anecdotal.

Read the full fact-check →
JD Denham
JD Denham
Peptide of the Week host · YouTube
Mostly wrong

The triple-agonist framework is correct, but the no-nausea claim and every dosing recommendation diverge dangerously from clinical trial data.

Read the full fact-check →
The Peptide Advantage
Peptide vendor channel · YouTube
Mostly wrong

The fabricated 3x/week, 333mcg, 10-12 week cycle protocol contradicts every clinical trial and pairs with commercially motivated branded-supplement promotion.

Read the full fact-check →

How we fact-check

  1. Transcript. We pull the full video transcript and extract every factual claim — weight loss percentages, dosing schedules, mechanism descriptions, safety assertions, comparisons to other drugs.
  2. Source. Each claim is checked against primary sources: peer-reviewed journals (NEJM, Lancet, JAMA), the trial registration on ClinicalTrials.gov, and the sponsor's press releases and regulatory filings.
  3. Verdict per claim. We label each claim as supported, partially correct, misleading, or contradicted — and link to the underlying source.
  4. Context. Where the creator oversimplifies or adds context not in the trial, we flag it and add what the data actually shows.

Who gets reviewed

We focus on voices people are actively watching: physicians (Drs. Alex Tatem, Kevin Joseph, Dr. Dan), coaches and bodybuilding figures (Gary Miller, Nick Trigili, David DeMesquita, Colin Watson, Michael Morelli), podcasters (Andrew Huberman), and peptide-focused creators (JD Denham, Dave Nap, The Peptide Advantage).

Each review is structured the same way — creator's strongest claim, weakest claim, and overall accuracy read. Browse the full list below.

Reviews are editorial, not legal or medical advice. If we get a fact-check wrong ourselves, reach out via about and we'll update.

All fact checks articles

17 articles

Adrian Crook Quit Retatrutide After 6 Months: What He Learned
Explainer

Adrian Crook Quit Retatrutide After 6 Months: What He Learned

A 6-month retatrutide diary with DEXA data, craving elimination, and a PPI interaction warning.

Updated February 2026

Andrew Huberman on Retatrutide: What He Said and What the Data Shows
Explainer

Andrew Huberman on Retatrutide: What He Said and What the Data Shows

Huberman called retatrutide 'the peptide that changes everything.' Here's what he said and what the data actually shows.

Updated June 2026

Coach Colin Watson on Retatrutide: 12-Week Review vs What the Data Shows
Explainer

Coach Colin Watson on Retatrutide: 12-Week Review vs What the Data Shows

Colin Watson's 12-week retatrutide review fact-checked — garbled mechanism, unsupported set point claims, and a peptide seller conflict of interest.

Updated February 2026

Coach Gary Miller on Retatrutide: His Protocol vs What the Data Shows
Explainer

Coach Gary Miller on Retatrutide: His Protocol vs What the Data Shows

Gary Miller's retatrutide protocol fact-checked against Phase 2 and Phase 3 clinical data.

Updated February 2026

Dave Nap on CagriSema vs Tirzepatide, Novo Nordisk's Triple Agonist UBT-251, and Retatrutide: Fact Check
Explainer

Dave Nap on CagriSema vs Tirzepatide, Novo Nordisk's Triple Agonist UBT-251, and Retatrutide: Fact Check

On The Pen host Dave Nap on CagriSema vs tirzepatide, Novo Nordisk triple agonist UBT-251, and retatrutide — fact-checked.

Updated February 2026

David DeMesquita's Retatrutide Injection Guide: What He Shows and What You Should Know
Explainer

David DeMesquita's Retatrutide Injection Guide: What He Shows and What You Should Know

DeMesquita's retatrutide reconstitution and injection video analyzed with safety context.

Updated February 2026

Dr. Alex Tatem on Retatrutide: A Physician's Breakdown Fact-Checked
Explainer

Dr. Alex Tatem on Retatrutide: A Physician's Breakdown Fact-Checked

A physician's retatrutide explainer fact-checked — mechanism, Phase 2 data, drug comparisons, and FDA timeline.

Updated February 2026

Dr. Ashley Froese on Retatrutide: Why It's the "King" of Fat Loss Peptides, Fact-Checked
Explainer

Dr. Ashley Froese on Retatrutide: Why It's the "King" of Fat Loss Peptides, Fact-Checked

A physician's retatrutide explainer fact-checked — GIP futile calcium cycling, glucagon thermogenesis, muscle loss, allodynia, and dosing.

Updated April 2026

Dr. Dan on Retatrutide vs Ozempic: Obesity Expert Fact Check
Explainer

Dr. Dan on Retatrutide vs Ozempic: Obesity Expert Fact Check

Obesity expert Dr. Dan's retatrutide vs Ozempic comparison — Phase 2 data, side effects, and timeline predictions fact-checked.

Updated February 2026

Dr. Jones DC on Retatrutide Phase 3 Results (28.7% Weight Loss), Triple Agonist Mechanism, and Retatrutide vs Tirzepatide: Fact Check
Explainer

Dr. Jones DC on Retatrutide Phase 3 Results (28.7% Weight Loss), Triple Agonist Mechanism, and Retatrutide vs Tirzepatide: Fact Check

Dr. Jones DC on retatrutide Phase 3 results, triple agonist mechanism, and retatrutide vs tirzepatide — fact-checked against trial data.

Updated February 2026

Dr. Kevin Joseph on Retatrutide: Physician's Overview Fact-Checked
Explainer

Dr. Kevin Joseph on Retatrutide: Physician's Overview Fact-Checked

Dr. Kevin Joseph's retatrutide overview fact-checked — solid mechanism explanation, a few errors on trial data, and side effect predictions contradicted by Phase 3.

Updated February 2026

JD Denham on Retatrutide: Triple Agonist Mechanism, Dosing, and Fat Loss Claims — Fact Check
Explainer

JD Denham on Retatrutide: Triple Agonist Mechanism, Dosing, and Fat Loss Claims — Fact Check

Peptide of the Week hosts on retatrutide dosing, nausea, muscle loss, and fat burning — fact-checked against clinical data.

Updated February 2026

Michael Morelli on Retatrutide: Fact Check
Explainer

Michael Morelli on Retatrutide: Fact Check

Michael Morelli claims retatrutide is anabolic and boosts cognition — fact-checked against published data.

Updated February 2026

NBC TODAY on Foundayo (Oral GLP-1 Pill): Fact Check
Explainer

NBC TODAY on Foundayo (Oral GLP-1 Pill): Fact Check

TODAY called it Zepbound — it's actually Foundayo. Weight loss data and pricing are accurate. Full fact check inside.

Updated April 2026

Nick Trigili on Retatrutide: His 10-Week Protocol vs What the Data Shows
Explainer

Nick Trigili on Retatrutide: His 10-Week Protocol vs What the Data Shows

Trigili's 10-week retatrutide protocol fact-checked against TRIUMPH-4 clinical trial data.

Updated February 2026

Pathologist Dr. Amin Hedayat on Retatrutide: What He Said and What the Data Shows
Explainer

Pathologist Dr. Amin Hedayat on Retatrutide: What He Said and What the Data Shows

A pathologist dismantles retatrutide piece by piece — mechanism, liver data, heart risks, and anhedonia fact-checked.

Updated April 2026

The Peptide Advantage Retatrutide Dosing Protocol: Fact Check
Explainer

The Peptide Advantage Retatrutide Dosing Protocol: Fact Check

The Peptide Advantage's 3x/week retatrutide microdosing protocol contradicts all clinical trial data — fact-checked.

Updated February 2026