• Home
  • Latest
  • Coins2Day 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Jack Dorsey

Twitter CEO Jack Dorsey Recorded a Podcast With Writer Who Claimed Vaccines Cause Autism

By
Renae Reints
Renae Reints
Down Arrow Button Icon
By
Renae Reints
Renae Reints
Down Arrow Button Icon
March 13, 2019, 4:14 PM ET

Twitter CEO Jack Dorsey appeared on a podcast with anti-vaccine fitness writer Ben Greenfield Tuesday, although he reportedly didn’t know Greenfield’s stance on the scientifically disproven theory prior to recording.

“Grateful for you,” Dorsey tweeted after recording with Greenfield. “Great conversation, and appreciate all you do to simplify the mountain of research focused on increasing one’s healthspan!”

Greenfield, who tweeted that the two discussed “advanced stress mitigation tactics, extreme time-saving workouts, DIY cold tubs, hormesis, one-meal-a-day,” and more, recently reinforced the theory that vaccines cause autism.

Vaccines do indeed cause autism (and for Pete's sake, don't trust @snopes for your news on this matter or any other alternative health news): https://t.co/9AFQd6lekk

— Ben Greenfield (@bengreenfield) February 11, 2019

Studies have shown that there’s actually no link between vaccines and autism. Still, anti-vaccine propaganda continues to discourage parents from vaccinating their kids, leading the World Health Organization to list vaccine hesitancy as one of its global health threats for 2019.

A Twitter spokesperson later told TechCrunch that Dorsey did not discuss vaccines with Greenfield on the podcast, was not aware of his stance on them, and the appearance was not meant to be an endorsement of his beliefs.

Major social media companies have recently been making moves to prevent anti-vaccine propaganda from appearing on their sites. Facebook said it will not recommend these types of pages, Pinterest will not return any search for the word “vaccine,” and YouTube demonetized anti-vaccination videos.

Although Twitter has not made any changes specifically targeting this movement, its advertising policies regarding healthcare state “ads that make claims about the cure, treatment, diagnosis, or prevention of certain diseases and conditions are restricted under our Healthcare policy,” NBC News reports.

About the Author
By Renae Reints
See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Coins2Day 500
  • Global 500
  • Coins2Day 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Coins2Day Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Coins2Day Brand Studio
  • Coins2Day Analytics
  • Coins2Day Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Coins2Day
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

© 2026 Coins2Day Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Coins2Day Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Most Popular

placeholder alt text
North America
'I meant what I said in Davos': Carney says he really is planning a Canada split with the U.S. along with 12 new trade deals
By Rob Gillies and The Associated PressJanuary 28, 2026
1 day ago
placeholder alt text
C-Suite
Coins2Day 500 CEOs are no longer giving employees an A for effort. Now they want proof of impact
By Claire ZillmanJanuary 28, 2026
2 days ago
placeholder alt text
Success
Every U.S. Olympian is going home with $200,000, whether they medal or not, thanks to a billionaire's $100 million gift
By Jacqueline MunisJanuary 28, 2026
1 day ago
placeholder alt text
Politics
The American taxpayer spent nearly half a billion dollars deploying federal troops to U.S. cities in 2025, CBO finds
By Nick LichtenbergJanuary 28, 2026
1 day ago
placeholder alt text
C-Suite
Jeff Bezos capped his Amazon salary at $80,000: ‘How could I possibly need more incentive?’
By Sydney LakeJanuary 28, 2026
1 day ago
placeholder alt text
Real Estate
Ryan Serhant thinks the American Dream was just a 'slogan created by banks,' but it was really about FDR, the Great Depression, and an economic crisis
By Sydney Lake and Nick LichtenbergJanuary 26, 2026
3 days ago

Latest in

schiltz
LawMinnesota
ICE keeps getting slapped down by a George W. Bush-appointed, Antonin Scalia acolyte Republican judge in Minnesota
By Ed White and The Associated PressJanuary 29, 2026
10 minutes ago
mangione
LawCrime
Pizza cutter-wielding FBI imposter tried to break Luigi Mangione out of jail, authorities say
By Michael R. Sisak and The Associated PressJanuary 29, 2026
19 minutes ago
CryptoCryptocurrency
Landmark crypto bill clears Senate hurdle but Democrats withhold support over lack of ‘gryfto’ rules to prevent Trump family conflicts of interest
By Leo SchwartzJanuary 29, 2026
39 minutes ago
homan
PoliticsMinnesota
Trump’s border czar vows ‘zero tolerance’ on assaults against ICE while gesturing at Minnesota drawdown
By Giovanna Dell'Orto, Rebecca Santana and The Associated PressJanuary 29, 2026
1 hour ago
omar
PoliticsMinnesota
Trump on Ilhan Omar getting apple cider vinegar squirted on her: ‘She probably had herself sprayed, knowing her’
By Alanna Durkin Richer, Steve Karnowski and The Associated PressJanuary 29, 2026
1 hour ago
man
HealthHealth
Life is actually getting better—and longer—for Americans, despite everything you read in the news
By Mike Stobbe and The Associated PressJanuary 29, 2026
1 hour ago