State medical #cannabis dispensaries and recreational cannabis legalization were associated with significant reductions in non-fatal opioid poisonings in the employer-sponsored insured population, particularly among male and younger populations. www.sciencedirect.com/science/arti...

Today, on Cinco de Mayo, my new book is officially out. Aging Well with Cannabis is for the canna-curious senior, family member, or caregiver who wants to understand whether cannabis can help with pain, sleep, anxiety, or quality of life. Available now. amazon.com/dp/1454962933

Very preliminary results: 'These findings suggest psilocybin shows promise as a novel treatment for cocaine use disorder.' (we don't have anything that works for cocaine #addiction) jamanetwork.com/journals/jam...

Today, on Cinco de Mayo, my new book is officially out. Aging Well with Cannabis is for the canna-curious senior, family member, or caregiver who wants to understand whether cannabis can help with pain, sleep, anxiety, or quality of life. Available now. amazon.com/dp/1454962933

The Trump Admin. pretends to care about people with #addiction, but this is an example of the many horrible policies they are enacting that is going to push up the overdose rate and end up needlessly killing people struggling with substance misuse. www.nytimes.com/2026/04/27/h...

Yes! Back since my brother Danny was a medical #cannabis patient 50 years ago, my family has worked toward providing education & care for medical #marijuana patients. This is incredibly ratifying! In truth, it should be declassified not just reclassified. www.nytimes.com/live/2026/04...

Half of older adults struggle with sleep. Yet many are still being prescribed sleeping medications that can cause confusion, falls, even memory problems. So why aren’t we talking more openly about cannabis? drpetergrinspoon.substack.com/p/half-of-ol...

This study highlights the potential of CBMPs as an alternative to opioid treatment. (I've seen this work for years in primary care clinic.) www.tandfonline.com/doi/full/10....

Half of older adults struggle with sleep. Yet many are still being prescribed sleeping medications that can cause confusion, falls, even memory problems. So why aren’t we talking more openly about cannabis? drpetergrinspoon.substack.com/p/half-of-ol...

Happy 420 Day from the Grinspoon family. On 5/5/26 my new book, "Aging Well with Cannabis" comes out, about how seniors and their families can use #cannabis safely and effectively. Pre-order now! www.amazon.com/Aging-Well-C...

Sadly, there are still some doctors who I deal with that think this movie is a documentary... www.nytimes.com/2026/04/20/m...

The medical journal TheLancet comes out against drug criminalization in favor of harm reduction. www.thelancet.com/journals/lan...

When they piloted reimbursing medical #cannabis in Worker's Compensation, 'patients reported meaningful reductions in pain, improvement in function, increased quality of life, and psychosocial stability...A modest reduction in opioid use was observed" journals.lww.com/joem/abstrac...

My mother Betsy, at age 95 (doing great!), gets to see the 18th book published by either her husband (Dr. Lester Grinspoon -- 11 books), her son @DrFunkySpoon (David Grinspoon -- he has 4 awesome books), or me -- this is my third: "Aging Well with Cannabis and CBD" out on 5/5/26.

My mother Betsy, at age 95 (doing great!), gets to see the 18th book published by either her husband (Dr. Lester Grinspoon -- 11 books), her son @DrFunkySpoon (David Grinspoon -- he has 4 awesome books), or me -- this is my third: "Aging Well with Cannabis and CBD" out on 5/5/26.

It’s a common idea in addiction medicine, but it doesn’t reflect reality. Most people who use substances don’t become addicted. Some even benefit. At the same time, misuse can be devastating. Both are true. drpetergrinspoon.substack.com/p/with-drugs...

It is excruciating as a primary care doctor to see awful diseases, which we have successfully controlled for a century, rear back due to the idiotic, ignorant policies of the Trump Administration, especially the most brainless of all, anti-vaxxer RFJ Jr. www.kuer.org/health/2026-...

We see the tragic effects of the "novel psychoactive molecules" in the addiction clinic I work at. It is an unregulated disaster (which, IMHO, would be better if we decriminalized drugs...). www.nytimes.com/interactive/...

This is a great interview with Dr. Staci Gruber in USA Today #cannabis www.usatoday.com/embed/video/...

It’s a common idea in addiction medicine, but it doesn’t reflect reality. Most people who use substances don’t become addicted. Some even benefit. At the same time, misuse can be devastating. Both are true. drpetergrinspoon.substack.com/p/with-drugs...

This is an amazing article -- my brother David @drfunkyspoon.bsky.social is the scientist who is interviewed; he injects some bad needed idealism into this entire issue. www.nytimes.com/2026/04/06/o...

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...