Really excited about this article today, about my new book, 'Aging Well with Cannabis' Link to preorder: www.hachettebookgroup.com/titles/peter... www.besteveryou.com/post/aging-w...

Physicians and nurses urgently need to learn more specific information about medical #cannabis to advise patients so patients don't have to rely on Budtenders (who, unsuprisingly, per this study, give very inaccurate (and with pregnancy, dangerous) advice! www.sciencedirect.com/science/arti...

In many ways, #alcohol is the most dangerous drug of all. Please see my blog: drpetergrinspoon.substack.com/p/the-most-d...

It sounds like they are having a lot of success with #MDMA in Australia for #PTSD www.nytimes.com/2026/03/24/h...

I agree that many people are undereducated about the potential harms of #cannabis (addiction, teens, pregnancy, mental health, cardiac...). The harms can also be wildly exaggerated, which is why we need to be measured & reasonable when discussing it. www.bostonglobe.com/2026/03/24/o...

In many ways, #alcohol is the most dangerous drug of all. Please see my blog: drpetergrinspoon.substack.com/p/the-most-d...

Same is true for primary care doctors at @MassGenBrigham; everyone wants to leave -- we haven't had even a cost of living adjustment for 5 years; this is why it's hard to find a PCP. 'https://www.bostonglobe.com/2026/03/23/business/mgb-cancer-nurse-practitioner-union/?p1=Article_Recirc_Most_Popular

'Mindset over molecule: comparing self-transcendent and mystical experiences across recreational psilocybin, MDMA, and cannabis use' (set and setting) (yes, #cannabis is a psychedelic...) link.springer.com/article/10.1...

At Week 24, outcomes in chronic pain, anxiety, depression, and quality of life improved [with #cannabis] www.tandfonline.com/doi/full/10....

Check out my latest post on #cannabis in seniors. drpetergrinspoon.substack.com/p/pain-sleep...

To confirm what we have always known (despite Drug War propaganda) about #Cannabis 'Alcohol and tobacco cause far more harms to people who consume them, and to society overall, than marijuana does, according to a new government-funded study' journals.sagepub.com/doi/10.1177/...

At baseline, cannabis users performed modestly better on tests of numeric memory and fluid intelligence, but no significant differences were observed in longitudinal cognitive change. (#cannabis does not contribute to dementia in older patients) www.thelancet.com/journals/lan...

Check out my latest post on #cannabis in seniors. drpetergrinspoon.substack.com/p/pain-sleep...

Check out my latest blog. How do you know when your drug use is addictive or if it is reasonable? How does it affect your family? What are the guardrails? How do you distinguish "safe" drug use from #addiction? drpetergrinspoon.substack.com/p/recreation...

This study also showed improved sleep, autistic symptoms and Tics in tourettes -- why aren't these findings in the news articles? also, many of the RCTs they used were done during the War on Drug which was only looking for harms #cannabis www.thelancet.com/journals/lan...

Happy to be included in this article about the use of #cannabis by older patients. www.bostonglobe.com/2026/03/16/b...

Interesting pilot study where a single dose of #psilocybin was far more effective than #nicotine patches for smoking cessation. #Psychedelics jamanetwork.com/journals/jam...

'Cannabis use in older adults does not appear linked to faster cognitive decline or higher dementia risk.' (we didn't think it did, but good to confirm...) #cannabis mentalhealth.bmj.com/content/29/1...

#cannabis for female orgasmic disorder/difficulty 'Research dating back to the 1970s shows that cannabis can improve orgasm function, quiet intrusive thoughts, heighten arousal, and deepen bodily connection.' link.springer.com/article/10.1...

Honored to speak on cannabis addiction at the United in Compassion medical #cannabis conference in Brisbane, Australia. It is a fantastic conference!

In this pilot randomized clinical trial, 1 dose of psilocybin with manualized CBT significantly increased long-term abstinence compared with nicotine patch treatment with CBT. #psychedelics jamanetwork.com/journals/jam...

CBD use as a substitute or adjunct to medications was common among US adults particularly for pain medications. (fewer NSAIDs = fewer ulcers and less kidney damage...) #cbd #cannabis pubmed.ncbi.nlm.nih.gov/41725772/

Amazing study: GLP-1 drugs [Wegovy, Ozempic...] 'associated with reduced risks of developing various incident SUDs [addictions], suggesting a broad preventive effect across multiple substance types.' www.bmj.com/content/392/...

Agree that teens need to avoid #cannabis use ("Just Say Wait"), but sensationalist @WSJ article ignores fact that teen usage of #marijuana is NOT rising with legalization (and weed has, unfortunately, always been easy to get for teenagers...) www.wsj.com/us-news/educ...

This article on need to study effects of #cannabis on older adults (I agree..) neglects that patients are using medical #marijuana INSTEAD of more dangerous pharmaceuticals like NSAIDS, opioids, benzos and hypnotics (e.g., Ambien) which is harm reduction. journals.sagepub.com/doi/full/10.....

Poll of Massachusetts residents found that they overwhelmingly oppose a proposed ballot initiative to roll back the state's marijuana legalization law, 63 percent to 20 percent. Editorial: great idea to start locking up Black people for #cannabis use again www.marijuanamoment.net/massachusett...

Big topic: is #cannabis addictive? How addictive? What are we doing wrong in the field of #addiction medicine. Check out my blog. drpetergrinspoon.substack.com/p/is-cannabi...

'Results highlight that #cannabis may influence brain health differently across the lifespan, potentially offering protective effects in older age while posing risks earlier in development.' pubmed.ncbi.nlm.nih.gov/41379083/

Check out my latest blog. How do you know when your drug use is addictive or if it is reasonable? How does it affect your family? What are the guardrails? How do you distinguish "safe" drug use from #addiction? drpetergrinspoon.substack.com/p/recreation...

Among horrible things Trump doing (trying to destroy elections & our democracy, torturing immigrants, ICE shoot innocent protestors, destroying alliances, ballooning our debt), this is diaster: to make his oil/coal friends rich, he's destroying our climate www.nytimes.com/2026/02/09/c...

I counsel against using #cannabis during pregnancy (unless under a few, extreme conditions...), but the data on harms is very mixed. This study shows no measurable harms with respect to ED visits, or developmental delay. www.academicpedsjnl.net/article/S187...

Big topic: is #cannabis addictive? How addictive? What are we doing wrong in the field of #addiction medicine. Check out my blog. drpetergrinspoon.substack.com/p/is-cannabi...

Check out one of my most popular video on the myriad uses of #cannabis in seniors (I have book coming out on this topic on 5/5/26) www.youtube.com/watch?v=jGJy...

New blog: In what universe does it make sense for Big Cannabis to bankroll Trump? When corporate cannabis aligns with anti-democratic power, it betrays the patients and activists who fought for legalization. We need legalization without corruption. drpetergrinspoon.substack.com/p/big-cannab...

'Findings suggest cannabis beverages may support alcohol substitution and reduce alcohol-related harms, offering a promising alternative for individuals seeking to lower alcohol intake.' #cannabis #harmreduction www.tandfonline.com/doi/full/10....

Important article about upcoming elections: www.nytimes.com/2026/01/31/o...

Another study suggesting that people are substituting #cannabis for #alcohol, which is a critical way to accomplish harm reduction. www.tandfonline.com/doi/abs/10.1...

Honored to be included in this interesting Guardian article -- the world is changing! (for the better); though: use #cannabis with caution (and not with alcohol...) www.theguardian.com/us-news/2026...

New blog: In what universe does it make sense for Big Cannabis to bankroll Trump? When corporate cannabis aligns with anti-democratic power, it betrays the patients and activists who fought for legalization. We need legalization without corruption. drpetergrinspoon.substack.com/p/big-cannab...

Off topic for me -- but we all need to push back against ICE, Trump's version of the Gestapo, which is harming (and now murdering) innocent civilians/peaceful protesters; most of the immigrants peaceful too - Trump is destroying fabic of our democracy. www.pbs.org/newshour/nat...

As long as people are careful not to consume too much THC, and don't plan on driving, #cannabis drinks are significantly safer than alcohol (which was associated with 178,000 deaths last year); this is harm reduction. www.nytimes.com/2026/01/25/b...

The nature of today’s unregulated drug supply has changed dramatically. In this video, I explain the risks of pressed pills and fentanyl contamination, and discuss what this means for harm reduction and drug policy. Watch the full video here: lnkd.in/eXQ6cNbR

Excited to speak on Feb. 9th. at 12:30, with wonderful panel, at The Petrie-Flom Center for Health Law Policy, Biotechnology, and Bioethics at Harvard Law School on #cannabis policy! (and I'm at MIT addiction bootcamp today). petrieflom.law.harvard.edu/events/detai...

Shocking! 'US drug policy does not align with experts’ rankings of drug harms: a multi-criteria decision analysis' #cannabis was in the middle and mushrooms were the least dangerous...has no relationship to how these substances are scheduled in CSA. link.springer.com/article/10.1...

'Acute migraine treatment with 6% THC + 11% CBD was superior to placebo at 2-h post-treatment with sustained benefits at 24 and 48 h.' (ramdomized, double-blind, placebo controlled) #cannabis #migraine pubmed.ncbi.nlm.nih.gov/41469488/

The nature of today’s unregulated drug supply has changed dramatically. In this video, I explain the risks of pressed pills and fentanyl contamination, and discuss what this means for harm reduction and drug policy. Watch the full video here: lnkd.in/eXQ6cNbR

Before I was a doctor, I was a kid watching my older brother Danny endure chemo for leukemia. Cannabis was the only thing that stopped the nausea & vomiting before he died at 16. It was the '70s, and using it meant breaking the law. Watch the full video at youtu.be/-MWHVhlIHwk

Interesting results: 'Older Adults’ Perspectives on and Experiences with Cannabis Use: Results From the 2024 National Poll on Healthy Aging' (this is what my upcoming book is about, #cannabis use in seniors, how to use it safely...) pmc.ncbi.nlm.nih.gov/articles/PMC...

This is so far beyond acceptable, and needs to stop; ICE is a fascist army that needs to be dismantled. 'agents have broken hospital protocol, refused to provide documentation and, in some cases, gotten into shouting matches with doctors and nurses.' www.nytimes.com/2026/01/19/u...

Please check out my latest blog, informed from my recent work in our low-threshold #addiction clinic at MGH. 'The world has never been so dangerous for drug users - Pressed Pills and Contaminated Cocaine' (our drug supply is poisoned with #fentanyl etc.) drpetergrinspoon.substack.com/p/the-world-...