Dr. Mark Tyndall
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drmarktyndall.bsky.social
Dr. Mark Tyndall
@drmarktyndall.bsky.social
Infectious Diseases and Public Health Doctor. Harm Reduction. Drug Policy. Human Rights. TEDMED 2017. MySafe. Vaping Advocate.
Reposted by Dr. Mark Tyndall
"For harm reduction pioneer @drmarktyndall.bsky.social,
safer nicotine products are safe supply for people who smoke."

"It’s such a brilliant way to do it," he tells Helen Redmond, "and it’s so frustrating that a lot of people don’t see it that way."
Why Dr. Mark Tyndall Is Taking a Stand for Tobacco Harm Reduction
The movement has long needed doctors to do this. Tyndall has the vital background of pioneering harm reduction for people who use drugs.
filtermag.org
July 24, 2025 at 4:54 PM
Reposted by Dr. Mark Tyndall
"Within 3 months [our community drug research] advisory group lost 3 out of 8 members to smoking-related diseases."

Yet as vaping is vilified, "a change would be an admission of failure and public health institutions fear this above all else."

By @drmarktyndall.bsky.social:
How the Need for Vapes Struck Me—and Why They’re Still Vilified
Within three months of forming the community drug research advisory group, we lost three out of eight members to smoking-related diseases.
filtermag.org
July 24, 2025 at 5:26 PM
Reposted by Dr. Mark Tyndall
More than 100 million smokers have switched to vaping, according to new WHO data.
www.who.int/news/item/06...
My column from earlier this year:
The harm reduction approach should apply to tobacco, too www.theglobeandmail.com/opinion/arti...
via @drmarktyndall.bsky.social
Dr. Mark Tyndall (@drmarktyndall.bsky.social)
Infectious Diseases and Public Health Doctor. Harm Reduction. Drug Policy. Human Rights. TEDMED 2017. MySafe. Vaping Advocate.
drmarktyndall.bsky.social
October 15, 2025 at 8:51 PM
Reposted by Dr. Mark Tyndall
Our latest podcast now live:
- @mgeist.bsky.social on new attempts to sneak through new lawful access provisions
- @drmarktyndall.bsky.social on his new book "Vaping: Behind the Smoke and Fears"
- Calgary mayoral candidate @jeromyyyc.bsky.social
robbreakenridge.substack.com/p/rob-breake...
Rob Breakenridge Show Episode 7: Border bill sneaks in lawful access, Vaping as harm reduction, Calgary's mayoral race
Interviews with law professor Michael Geist, harm reduction expert and author Dr. Mark Tyndall, and Calgary mayoral candidate Jeromy Farkas
robbreakenridge.substack.com
June 10, 2025 at 5:26 PM
New book available soon. Vaping" Beyond the Smoke and Fears. #vapesaveslives #tobaccoharmreduction #GFN25 #harmreduction
May 29, 2025 at 4:49 AM
Reposted by Dr. Mark Tyndall
HIV prevention rock star @drmarktyndall.bsky.social bringing out new book on vaping nicotine as quintessential harm reduction. Book available in June. Its excellent. Well worth reading @chancethegardener.bsky.social @jgitchell.bsky.social @aliveadvocacy.bsky.social
drmarktyndallauthor.com
Dr. Mark Tyndall – Author
drmarktyndallauthor.com
May 21, 2025 at 10:48 AM
Reposted by Dr. Mark Tyndall
Just finished reading Crackdown by @garthmullins.bsky.social and I am thankful this book has been written. If you are wondering why the streets are looking the way they do and how to better manage the problems, this book offers a lot to consider from the perspective of someone on the ground.
May 18, 2025 at 8:29 PM
Reposted by Dr. Mark Tyndall
Vaping opponents have become post truthers, convinced like their political counterparts that blatant dishonesty pays. May be also impressed with how long flagrant dishonesty worked for Big Tobacco @drmarktyndall.bsky.social
I think this is why the social media anti-vaping narrative recently shifted away from objective evidence like official govt surveys, and doubled down on anecdotal fake news about innocent teens who supposedly suffered horrible lung injury after vaping. #FactCheck ANY of those stories and they're BS.
Vaping opponents can’t use evidence to counter arguments made by vape supporters because the evidence so strongly supports vaping. So they rely on smear & fear campaigns, no compunction making up stuff @gfn.events @gregthr.bsky.social @ianamossyd.bsky.social @aliveadvocacy.bsky.social
May 3, 2025 at 11:32 PM
Reposted by Dr. Mark Tyndall
Michael Russell famously said ‘people smoke for the nicotine but die from the tar’. Now it’s a case of ‘people smoke for the nicotine but die from opposition to tobacco harm reduction’. Drug harm reduction & tobacco harm reduction involve identical principles #HR25
@drmarktyndall.bsky.social
April 28, 2025 at 8:40 PM
Reposted by Dr. Mark Tyndall
PMI report released 5 days ago show gross profit & net revenue far greater now for low risk smoke free products than for deadly combustible cigarettes #harmreduction #HR25 @gfn.events @drmarktyndall.bsky.social
@aliveadvocacy.bsky.social
April 28, 2025 at 10:58 PM
Excited to announce my new book, Vaping: Behind the Smoke and Fears. Coming soon. Stayed tuned.
April 16, 2025 at 1:33 AM
Reposted by Dr. Mark Tyndall
Gross profit in US on pack of Marlboros = $4.50 & operating profit ~ $3.64. Profit per pack doubled <5years on product costs ~ 40c to make. No other legal consumer product as lucrative to make. Restricting smoke free options helps Make Big Tobacco Greatly Profitable Again & @jamomartin.bsky.social
April 12, 2025 at 7:01 AM
Received a desperate message from a friend living in Kenya who has had her ARV medications abruptly stopped as the USAID sponsored clinic has been closed down. What Trump and his heartless and vile supporters have done is truly diabolical. There must be a response.
April 9, 2025 at 4:34 AM
For Candians, this guy can never be the next Prime Minister for his many positions on critical issues including his total lack of understanding around drug use and addiction. Bizarre statements like this. www.cbc.ca/news/politic...
Conservatives target supervised consumption sites, NDP promises rent control | CBC News
A Conservative government would prevent any new supervised consumption sites from opening, while making it harder for existing sites to operate, leader Pierre Poilievre announced Sunday, as he provide...
www.cbc.ca
April 7, 2025 at 2:27 AM