John Gregory
@johngregoryx.bsky.social
Health editor at NewsGuard, tracking and countering false health claims.
Anti-vaxxers are claiming that pet vaccines are causing a cancer epidemic among dogs and cats, including so-called “turbo cancers.” But there is no evidence to support their narrative. www.newsguardrealitycheck.com/p/anti-vaxxe...
Anti-Vaxxers Are Coming for Your Pets
Anti-vaccine activists claim that cancer rates among dogs and cats are soaring, and that vaccines are to blame. The evidence suggests otherwise.
newsguardrealitycheck.com
NewsGuard found 57,000 mentions on X of the phrase “82% miscarriage rate” between Aug. 10 and 13, with NewsNation and four GOP Senators helping the false claim to spread. www.newsguardrealitycheck.com/p/covid-vacc...
COVID Vaccine-Induced Miscarriages?
Conservatives falsely claim that COVID-19 vaccines are linked to an increased risk of miscarriage: NewsGuard’s False Claim of the Week
newsguardrealitycheck.com
Conservative commentators and right-leaning media are seizing on a January 2021 text message from Dr. Anthony Fauci to promote the long-debunked myth that COVID-19 vaccines cause miscarriages -- and in one case, demanding to "waterboard" Fauci. www.newsguardrealitycheck.com/p/innocent-f...
Innocent Fauci Text Spun to Boost COVID-Miscarriage Myth
Conservative commentators and news sites are citing a January 2021 text message from Dr. Fauci to wrongly claim that COVID-19 vaccines can cause miscarriages.
newsguardrealitycheck.com
Scoop: NewsGuard is launching an AI chatbot that accesses and aggregates info only from the sources it has rated as reliable. And it promises to pay the news publishers it cites. Here are all the details: www.cnn.com/2026/06/22/m...
This chatbot wants to solve AI’s news problem | CNN Business
AI chatbots are fast becoming a way people find news. But the systems are only as reliable as their sources, and are prone to misinformation and manipulation.
cnn.com
The rise in alpha-gal syndrome is real -- yet purveyors of false claims are exploiting that increase to push baseless conspiracies about its origin and a phony ear acupuncture cure. Read more in today's Reality Check from NewsGuard: www.newsguardrealitycheck.com/p/are-bill-g...
Are Bill Gates’ Ticks Making Us Vegan?
Health hoaxers — citing the increase in a tick-borne red meat and dairy allergy — flood social media with false claims, including ones aimed at Gates.
newsguardrealitycheck.com
Sites known for pushing false health claims are now asserting that GLP-1 drugs increase the risk of suicidal thoughts by 45 percent -- but it's all based on one study of unvetted “adverse event” reports. www.newsguardrealitycheck.com/p/the-phanto...
The Phantom Link Between Weight-Loss Drugs and Suicide
Health hoax sites falsely claim that an August 2024 study proves that GLP-1 treatments cause a 45 percent increase in suicidal ideation.
newsguardrealitycheck.com
The people who told you 5G caused COVID (it didn't) are now saying 6G is to blame for hantavirus (also no). Read more about the spread of this biologically impossible conspiracy theory from NewsGuard's Reality Check: www.newsguardrealitycheck.com/p/theres-no-...
There’s No Possible Link Between Hantavirus and ‘6G’
PLUS: A Russian Disinformation Campaign Steals NewsGuard’s Name
newsguardrealitycheck.com
“It’s basically conspiracy theory Mad Libs; they just take out the nouns & then they replace them with whatever the new outbreak is about.” - @johngregoryx.bsky.social of @newsguard.bsky.social #HealthMisinformation
The Hantavirus Outbreak Is Resurrecting Covid-Era Misinformation Tactics
nytimes.com
The 600th COVID myth documented by NewsGuard involves....Tom Hanks, for some reason. My reflections after 6+ years mired in the alternate reality created by COVID misinformers: www.newsguardrealitycheck.com/p/newsguard-...
NewsGuard Tracks the 600th COVID Myth
“Peddlers of false claims are fighting to keep their alternate reality of COVID myths alive,” NewsGuard Health Editor John Gregory writes in a commentary.
newsguardrealitycheck.com
Have you seen posts claiming a new study found 84% of cancer patients saw clinical benefits from taking antiparasitic drugs ivermectin and mebendazole? It's really just a survey masquerading as something scientific to sell an unproven and unapproved cancer treatment.🧵
Elon Musk supercharged the spread of a baseless claim that COVID-19 vaccines killed 60,000 people in Germany, sharing a post that amassed more than 50 million views on X alone. Read more from NewsGuard's Reality Check: www.newsguardrealitycheck.com/p/musk-gives...
Musk Gives a 50 Million-View Boost to COVID Vaccine Hoax
X owner promotes the claim that COVID vaccines killed 60,000 people in Germany.
newsguardrealitycheck.com
The RFK Jr.-founded Children's Health Defense doesn't just spread false claims about vaccines, but also about WiFi and cell phones. Its latest narrative claims that 26 million adults have health issues from wireless radiation. But its evidence had one obvious problem. 🧵
Myths spreading online about the UK meningitis are following the same playbook of false narratives seen during the COVID pandemic — even baselessly trying to blame COVID vaccines. Read more in NewsGuard’s Reality Check: www.newsguardrealitycheck.com/p/uk-meningi...
U.K. Meningitis Outbreak Gets the Health Hoax Treatment
Four false claims about the U.K. meningitis outbreak follow the COVID-era hoax handbook
newsguardrealitycheck.com
Anti-vaxxers' latest deflection from increasing measles cases: Saying that measles infections are actually beneficial and protect you from cancer (they don't.) www.newsguardrealitycheck.com/p/anti-vaxxe...
Anti-Vaxxers Claim Deadly Measles Is Good for You
PLUS: Chinese State-Linked Operation Caught Using AI to Deceive Taiwanese Voters
newsguardrealitycheck.com
Why We've Just Sued the Government Statement by NewsGuard Co-CEOs Steven Brill and Gordon Crovitz February 6, 2026 Read our full statement here: www.newsguardtech.com/press/why-we...
New from me in STAT: Many of the 1,000 false health claims debunked by NewsGuard have involved twisting legitimate research. Researchers need to push back — especially when HHS is misrepresenting your work. www.statnews.com/2025/12/22/r...
Researchers have a moral obligation to push back when their studies are twisted to promote false health claims
NewsGuard has collected 1,000 provably false statements in its False Claim Fingerprints database. Many involve misrepresented research.
statnews.com
Anti-vaxxers falsely claimed that hepatitis B vaccination is only justified for "PROSTITUTES AND DRUG ADDICTS" in celebrating a CDC panel's move to no longer recommend the vaccine for newborns. www.newsguardrealitycheck.com/p/cdcs-hepat...
CDC’s Hepatitis B Vaccine Revision Sparks Bogus Claims
Prominent anti-vaxxers falsely claim that hepatitis B vaccination for newborns is unjustified, pointing to the CDC’s revised recommendations.
newsguardrealitycheck.com
The father of the vaccine-autism myth is back with a new report pushing the same false claim. By counting studies of varying quality and methods as if they were equal, the report is like "a mountain of garbage," according to one expert. Read more here: www.newsguardrealitycheck.com/p/claim-dism...
Claim Dismissed as ‘Mountain of Garbage’ Links Vaccines to Autism
NewsGuard spoke to experts who dismissed a widely-promoted new report claiming to link vaccines to autism as based on misinterpreted data
newsguardrealitycheck.com
President Donald Trump’s pick for Surgeon General, Casey Means, has spread multiple provably false and potentially dangerous health claims — from the debunked myth that vaccines are linked to autism to the perilous claim that raw milk has health benefits.
Five Health Hoaxes Pushed by Trump’s Surgeon General Nominee
Casey Means, Trump’s pick for Surgeon General, has advanced five provably false health claims since 2024, including that vaccines cause autism
newsguardrealitycheck.com
Chemtrails still aren't real, even when there's a government shutdown. Read the latest from NewsGuard's Reality Check: newsguardrealitycheck.com/p/the-end-of...
The End of Secret Government ‘Chemtrails’?
Conspiracy theorists are claiming that the government shutdown ended the practice of controlling the population through ‘chemtrails’ — a phenomenon that doesn’t actually exist
newsguardrealitycheck.com
Conservative social media accounts are baselessly claiming that Tylenol overdoses among pregnant women are increasing because liberals are taking large amounts of the medication to spite President Donald Trump. Read more with NewsGuard's Reality Check: www.newsguardrealitycheck.com/p/pregnant-w...
Pregnant Women Are Not Downing Tylenol to Spite Trump
No evidence supports a growing right-wing claim that liberal pregnant women are overdosing on Tylenol as a protest against Trump
newsguardrealitycheck.com
In less than 24 hours, there were 38,000 posts on X mentioning both “Amish” and “no autism,” according to a social media analytics tool used by NewsGuard. www.newsguardrealitycheck.com/p/bogus-vacc...
Bogus Vaccine-Autism Claims Go Viral After Trump Press Conference
False claims, including that the Amish don’t have autism because they are not vaccinated, surged following the Trump administration’s Sept. 22 press conference
newsguardrealitycheck.com
The head of a new federal task force charged with reviewing the safety of COVID-19 vaccines has spread multiple false claims about the vaccines, including saying that the vaccines are responsible for an “unprecedented level of harm.” www.newsguardrealitycheck.com/p/cdcs-new-v...
CDC’s New Vaccine Panel Head is a COVID Myth Superspreader
The leader of a new federal working group on COVID-19 vaccines has a long record of spreading false claims about vaccines.
newsguardrealitycheck.com
"According to misinformation tracker NewsGuard, the campaign...takes advantage of high-profile events to pump out fabricated content from various publications, including ABC News, BBC and most recently POLITICO." www.politico.com/news/2025/08...
Russia is quietly churning out fake content posing as US news
A pro-Russian propaganda group is taking advantage of high-profile news events to spread disinformation — and they’re spoofing reputable news outlets to do it.
politico.com
RFK Jr. justified canceling mRNA vaccine funding by saying COVID vaccines: -"encourage new mutations" -"don't perform well" against respiratory viruses -"pose more risk benefits" All of those claims are false. More in NewsGuard's latest Reality Check: www.newsguardrealitycheck.com/p/rfk-jr-cit...
RFK Jr. Cites Three False COVID Vaccine Claims to Justify Canceling mRNA Vaccine Funding
Health and Human Services Secretary Robert F. Kennedy Jr. advanced three false claims about COVID-19 vaccines to explain his cancellation of $500 million in government-funded mRNA vaccine projects.
newsguardrealitycheck.com
NewGuard has become the target of a Kremlin-backed propaganda operation. We’ll take the impersonation and baseless accusations of bribes to be confirmation we’re doing something right. www.newsguardrealitycheck.com/p/russias-la...
New from NewsGuard: Natural health influencers are recycling the long-debunked myth that staring at the sun will miraculously improve your eyesight. Recent TikToks promoting the dangerous practice have garnered 100,000+ views. Read more here: www.newsguardrealitycheck.com/p/hoax-cure-...
"The research, conducted through NewsGuard's newly launched Reality Gap Index in partnership with YouGov, surveyed 1,000 Americans and found that only 7 percent of those surveyed could correctly identify all three false claims as untrue." newsweek.com/newsguard-st...
Nearly half of Americans believe false claims, study shows
A NewsGuard study finds 49 percent of Americans believe false online claims, with only 7 percent correctly identifying all as untrue.
newsweek.com
Since his first confirmation hearing, RFK Jr. has spread 12 provably false health claims in government hearings, media appearances, and on social media that have collectively amassed 25 million views on X alone, according to a NewsGuard analysis. www.newsguardrealitycheck.com/p/rfk-jr-get...
RFK Jr. Gets a Bigger Megaphone
Since January, the Nation’s Top Health Official Has Advanced 12 False Health Claims Gaining 25 Million Views on X Alone
newsguardrealitycheck.com
ICYMI: Researchers said RFK Jr.'s HHS twisted their work to justify shift on COVID vaccines during pregnancy. HHS' response was to suggest NewsGuard was dismissing "significance of the underlying data," even when the study authors said HHS was wrong. www.newsguardrealitycheck.com/p/researcher...
Researchers Say HHS Memo to Congress Twisted Their Work to Back RFK Jr.'s Anti- Vaccine Agenda
By John Gregory
newsguardrealitycheck.com