
In the News
CNN: PHI’s Lynn Silver Discusses New Study Connecting Cannabis and Cardiovascular Diseases
- CNN Health

“Using marijuana doubles the risk of dying from heart disease, according to a new analysis of pooled medical data involving 200 million people mostly between the ages of 19 and 59.
“What was particularly striking was that the concerned patients hospitalized for these disorders were young (and thus, not likely to have their clinical features due to tobacco smoking) and with no history of cardiovascular disorder or cardiovascular risk factors,” said senior author Émilie Jouanjus, an associate professor of pharmacology at the University of Toulouse, France, in an email.
“Getting this right is critically important because cardiovascular disease is the top cause of death both in the United States and globally,” said Silver, who is also senior adviser at the Public Health Institute, a nonprofit public health organization that analyzes marijuana policy and legalization.
Silver is the coauthor of an editorial published with the paper that calls for change in how cannabis is viewed by health professionals, regulatory bodies and the public at large.

Clinicians need to screen people for cannabis use and educate them about its harms, the same way we do for tobacco, because in some population groups it’s being used more widely than tobacco. Our regulatory system, which has been almost entirely focused on creating legal infrastructure and licensing legal, for-profit (cannabis) businesses, needs to focus much more strongly on health warnings that educate people about the real risks.Lynn Silver, MD, MPH
Director, Getting it Right from the Start, Public Health Institute
The dangers of smoke (and maybe edibles)
The new systematic review and meta-analysis analyzed medical information from large, observational studies conducted in Australia, Egypt, Canada, France, Sweden and the US between 2016 and 2023.
Those studies did not ask people how they used cannabis — such as via smoking, vaping, dabbing, edibles, tinctures or topicals. (Dabbing involves vaporizing concentrated cannabis and inhaling the vapor.) However, “based on epidemiological data, it is likely that cannabis was smoked in the vast majority of cases,” Jouanjus said.
Smoking tobacco is a well-known cause of heart disease — both the smoke and the chemicals in tobacco damage blood vessels and increase clotting, according to the US Centers for Disease Control and Prevention.
Therefore, it is not surprising that smoking, vaping or dabbing cannabis could do the same, Silver said: “Any of the many ways of inhaling cannabis are going to have risks to the user, and there’s also secondhand smoke risks, which are similar to tobacco.”
Click on the link below to read the full article.

Read the Heart Editorial: "It Is Time to Treat Cannabis as an Important Risk Factor for Cardiovascular Disease"
This editorial, co-written by Stanton A. Glantz, PhD and PHI’s Lynn Silver, MD, MPH and published in Heart, reviews a new meta-analysis of 24 recent studies, showing significantly increased risk of cardiovascular events among cannabis users.
Related Articles
Cannabis use linked to a doubled risk of heart disease death, new study finds / CBS News
Study: Marijuana use raises heart risks; experts urge tobacco-like restrictions / CBS Austin
Marijuana doubles your risk of cardiovascular diseases, a worrying new study shows / National Geographic
Cannabis is bad for the heart—should the risk be taken more seriously? / CardiovascularBusiness
Study: Marijuana use raises heart risks; experts urge tobacco-like restrictions / NBC 15 News
Cannabis-CVD Link Holds Strong Amid Changing Drug Laws, User Habits / Medpage Today
Cannabis Users at Higher Risk of Heart Attack and Stroke / KQED
New study shows cannabis use doubles risk of death from heart disease / The Jerusalem Post
Cannabis use could double risk of heart deaths, study suggests / The Guardian
Think Weed is Harmless? This Study Might Change Your Mind / Men’s Journal
Study: Marijuana use raises heart risks; experts urge tobacco-like restrictions / Fox 26 News
Cannabis use may double risk of death from cardiovascular disease / Open Access Government
Canabis cardiac warning / Pharmacy Daily
Cannabis use associated with increased risk of stroke and heart attacks / News Medical
New study reveals cannabis use doubles risk of dying from cardiovascular disease / Express US
Marijuana’s Links to Heart Attack and Stroke Are Becoming Clearer / New York Times
Real-World Data Suggests Cannabis Use is Associated With Major Adverse Cardiovascular Events / Pharmacy Times
Marijuana Doubles Your Risk of Dying From Heart Disease—And Edibles May Not Be Safer / BestLife
Cannabis use may double risk of cardiovascular disease death / Lab+Life Scientist
KFBK-AM (Radio) – Afternoon Drive (3:30 PM) / NewsRadio KFBK Sacramento
New Study: Marijuana Use Could Double the Risk of Cardiovascular Death / KTVU Fox News Channel 2
The Cannabis Debate: Rising health risks, addiction, and regulation / Lynnwood Times
Originally published by CNN Health
More Updates
Work With Us
You change the world. We do the rest. Explore fiscal sponsorship at PHI.
Support Us
Together, we can accelerate our response to public health’s most critical issues.
Find Employment
Begin your career at the Public Health Institute.