Timothy Caulfield
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caulfieldtim.bsky.social
Timothy Caulfield
@caulfieldtim.bsky.social
Professor of health law and science policy, author, speaker, and commentator. #ScienceUpFirst

Linktree: https://linktr.ee/caulfieldtim
🚨NO "sudden death"

🚨NO "turbo cancer"

Yet MORE COVID vaccine safety data...👇

COVID mRNA Vaccination & 4-Year All-Cause Mortality jamanetwork.com/journals/jam...

"...no increased risk of 4-year all-cause mortality..."

"...74% lower risk of death from severe COVID..."
COVID-19 mRNA Vaccination and 4-Year All-Cause Mortality Among Adults in France
This cohort study uses the data from all adults aged 18 to 59 years living in France on November 1, 2021, to evaluate whether there is an association of receipt of an mRNA COVID-19 vaccine with long-t...
jamanetwork.com
December 5, 2025 at 11:55 PM
Again, politics the MOST significant variable.👇

Trust in Scientists for Cancer Information Across Political Ideologies in US jamanetwork.com/journals/jam...

"...significantly lower among individuals with more conservative political views"

Trust: 93.7% liberal & 70.5% conservatives
Public Trust in Scientists for Cancer Information Across Political Ideologies in the US
This survey study investigates whether political ideology is associated with trust in scientiests as asources of cancer information in the US.
jamanetwork.com
December 5, 2025 at 11:28 PM
Aluminium is crucial to vaccines — and safe. Why are US advisers debating it? www.nature.com/articles/d41... by @heidiledford.bsky.social via @nature.com

"You cannot just get rid of an adjuvant that works and is safe before you have something else that you know will be a good replacement."
Aluminium is crucial to vaccines — and safe. Why are US advisers debating it?
RFK Jr’s vaccine advisory panel will be discussing the inclusion of adjuvants in childhood vaccinations this week. Here’s what’s at stake.
www.nature.com
December 5, 2025 at 11:14 PM
Rising antivaxx noise = aggravating day!

I believe my colleague, Professor Maxwell, thinks I should take a break... ❤️

#Meow.
December 5, 2025 at 7:34 PM
Ugh. A frustrating article, @washingtonpost.com!

Full-body MRI? wapo.st/44Sf9dV

No good evidence to support (industry study?). Exploitive money grab. Likely = > harm. Iatrogenic injury. Anxiety. Cost (to individual & system). Etc.

Professional orgs recommend against. Just... no.
Column | A full-body MRI can reveal hidden killers. Do we want to know?
Like many emerging technologies, this one can improve our lives, make us miserable or both. Nobody knows yet which it will be.
wapo.st
December 5, 2025 at 5:45 PM
Public Overwhelmingly Supports Hep B Vaccine for a Newborn www.annenbergpublicpolicycenter.org/although-pub...

"...credited with a 99% reduction in cases of acute hep B"

"...no evidence justifying delaying hepatitis B vaccination."

90% of Dems & 65% Republicans recommend vaccine.

#VaccinesWork
Although Public Overwhelmingly Supports Hepatitis B Vaccine for a Newborn, Partisan Differences Exist | The Annenberg Public Policy Center of the University of Pennsylvania
Most Americans would be likely to recommend the hepatitis B vaccine for a newborn, according to a new APPC survey.
www.annenbergpublicpolicycenter.org
December 5, 2025 at 4:53 PM
Watching the death of the CDC?

Panel Votes to End Recommendation for Hepatitis B Shots for All Newborns www.nytimes.com/2025/12/05/h...

@mtosterholm.bsky.social: “Today is a defining moment for our country. We can no longer trust federal health authorities when it comes to vaccines.”
Panel Votes to End Recommendation for Hepatitis B Shots for All Newborns
www.nytimes.com
December 5, 2025 at 4:29 PM
So much BS in this CDC rant 👇, but let's focus on his completely illogical airplane comment.

- There isn't a vast anti-aeronautical engineer industry marketing flying carpets.
- Conspiracy theorist aren't saying Bernoulli effect fake
- Would you fly on All Knowledge Is Relative Air?
Who are you gonna trust? Your pediatrician or the non doctor supply chain researcher guy sitting on the CDC's Advisory Committee on Immunization Practices RFK's bench is so shallow that he qualifies as an expert? (Also WE DO TRUST PLANES AND THE GOVT AGENCY THAT REGULATES THEM.)
December 5, 2025 at 3:57 PM
Dark Age Nation...

Expected. Still infuriating & nonsensical.

CDC panel recommends delaying birth dose of hepatitis B vaccine www.statnews.com/2025/12/05/c... via @statnews.com

"...overturning a 30-year-old policy that has contributed to a massive decline in cases of the virus."
CDC panel recommends delaying birth dose of hepatitis B vaccine
The CDC's ACIP panel voted to recommend delaying the birth dose of the hepatitis B vaccine, ending a policy that has reined in the virus.
www.statnews.com
December 5, 2025 at 3:47 PM
So much evidence to support. Life saving.

Antivaxx rhetoric wrong, wrong, wrong.

Cochrane Systematic Review: Effects of human papillomavirus (HPV) vaccination programmes on community rates of HPV‐related disease and harms from vaccination www.cochranelibrary.com/cdsr/doi/10....
December 5, 2025 at 3:45 PM
People struggle to separate argument quality from their own political opinions www.psypost.org/people-strug...

"....prior beliefs about that topic are more important than the actual quality of those arguments."

Study: "...people do not evaluate arguments independently of the background beliefs..."
People struggle to separate argument quality from their own political opinions
A new study in Cognition reveals that when evaluating political arguments, your prior beliefs matter far more than the actual logic. Researchers found that confirmation bias outweighs evidence quality...
www.psypost.org
December 5, 2025 at 3:07 PM
Valuable research... 👇 #Move!

Study: Walking to work can be faster—and healthier—than you think medicalxpress.com/news/2025-12...

"...by making small tweaks to how we plan our daily travel, we can unlock big health benefits..."
Walking to work can be faster—and healthier—than you think
A new proof-of-concept study from researchers at Bar-Ilan University reveals a surprising finding: incorporating more walking into public transportation commutes can improve health—without adding extr...
medicalxpress.com
December 4, 2025 at 11:23 PM
Rage or real? Experts urge caution as X reveals location data www.cp24.com/news/canada/...

Me: "Our information environment is increasingly becoming a rage economy, and what we’re seeing is bad actors — foreign individuals — monetizing our polarization."
Rage or real? Experts urge caution as X reveals location data
Social media and tech experts are preaching caution as X, formerly Twitter, rolls out a new location feature meant to disclose which country account holders post from.
www.cp24.com
December 4, 2025 at 10:50 PM
TONIGHT! 📢

So looking forward to this virtual event with my buddy,
@drjengunter.bsky.social!

Sign up here: www.crowdcast.io/c/c20bqh2fwey7
December 4, 2025 at 10:28 PM
Love this optimism! #GoTeam!

Chris Whitty: Why health misinformation spreads www.bmj.com/content/391/...

"Through every single one of the past 160 years there was extensive misinformation about health—and yet the improvements continued."

"This is a battle that is winnable."
Chris Whitty: Why health misinformation spreads—and honesty about uncertainty is the answer
England’s chief medical officer said in a recent lecture that misinformation has always accompanied medical progress—and that the battle is winnable if we can talk honestly about uncertainty “Through...
www.bmj.com
December 4, 2025 at 8:52 PM
Reposted by Timothy Caulfield
We’ve gone from fearing fat to worshipping protein—even though most of us already eat more than enough. Why do we keep falling for new health halos? And who profits when we do? Writer @caulfieldtim.bsky.social explores: thewalrus.ca/enough-with-the-...
December 4, 2025 at 3:00 PM
Responding to public health challenges of medical advice from social media influencers www.bmj.com/content/391/...

"Influencers’ reliability is often undermined by four key biases: lack of expertise, industry influence, entrepreneurial interests, and personal beliefs."
Responding to public health challenges of medical advice from social media influencers
Raffael Heiss and colleagues argue that influencers’ medical advice is often shaped by multiple biases and suggest how to reduce the associated risks Social media influencers have become powerful in ...
www.bmj.com
December 4, 2025 at 5:12 PM
A dozen former FDA commissioners condemn plan to tighten vaccine approvals wapo.st/4pkD2Dk

"These measures, and the unilateral way they are being imposed, undermine the public interest."

"They are the latest in a series of troubling changes at the FDA..."
A dozen former FDA commissioners condemn plan to tighten vaccine approvals
In the New England Journal of Medicine, the former leaders wrote they were “deeply concerned” at how the top vaccine regulator is raising the bar for approvals.
wapo.st
December 4, 2025 at 3:36 PM
My latest...👇

Bro, Enough with the Protein. You’re Just Making Expensive Pee thewalrus.ca/enough-with-... via @thewalrus.ca

The protein blitzkrieg has been felt. Consumers are responding. Marketing has won.

Reality: "People have lost their minds on this one."

Needed: Healthy & balanced!
Bro, Enough with the Protein. You’re Just Making Expensive Pee | The Walrus
Experts say the hype around the latest dietary must-have has become a farce
thewalrus.ca
December 4, 2025 at 3:17 PM
Reposted by Timothy Caulfield
That time I warned men about the perils of tanning and slapping their balls in @caulfieldtim.bsky.social’s CBC documentary about the intersection of the manosphere and wellness industry, called Harder Better Faster Stronger.
December 3, 2025 at 8:25 PM
Sum: RFK Jr is wrong, wrong, wrong. Yet again.

The HPV vaccine is safe and cuts cervical cancer risk by 80%, large reviews find www.nbcnews.com/health/healt... via @nbcnews.com

"The vaccine works. Full stop."

"The vaccine is safe. Full stop."

#VaccinesWork #ScienceMatters
The HPV vaccine is safe and cuts cervical cancer risk by 80%, 2 large reviews find
Hundreds of studies, including gold-standard clinical trials, challenge Health Secretary Robert F. Kennedy Jr.’s claim that the cancer vaccine is harmful.
www.nbcnews.com
December 3, 2025 at 11:53 PM
I'm fascinated with psychology driving Prasad, Makary, Bhattacharya, Oz, etc.

These individuals have a science background.

They MUST know they're:
- pushing harmful BS
- enabling an authoritarian admin
- their legacy is now darkness

WTF is the motivation? Why do this? WHY?
December 3, 2025 at 11:35 PM
🚨 A Threat to Evidence-Based Vaccine Policy & Public Health Security at the FDA www.nejm.org/doi/full/10.... @nejm.org

"We are deeply concerned by sweeping new FDA assertions about vaccine safety & proposals"

Needed: "open deliberation, solid evidence, & procedures the public can see & trust."
A Threat to Evidence-Based Vaccine Policy and Public Health Security at the FDA | NEJM
Twelve former commissioners of the FDA express concern that the agency’s recent moves will undermine a regulatory model designed to ensure vaccine safety, effectiveness, and availability.
www.nejm.org
December 3, 2025 at 10:35 PM
Spotify Wrapped experience fascinating.

Often disconnect btw actual listening & stated preferences.

How we frame musical tastes = projection of image / team.

Wrapped summary a bit of an objective analysis of actual taste.

Funny: my son's "musical age" 88. My age, 21. Huh? Bad parenting?
December 3, 2025 at 6:29 PM
Use of online health info linked to lower trust... 👇

Internet and lack of trust threatens patient–doctor bond medicalxpress.com/news/2025-12...

Those with low trust say "their interaction with a doctor worsened after looking up online medical information."
Internet and lack of trust threatens patient–doctor bond
Physicians have worked to earn the trust of their patients for nearly 2,400 years, dating back to the days of Hippocrates, the father of Western medicine. Lucky for Hippocrates that his patients didn'...
medicalxpress.com
December 3, 2025 at 5:13 PM