Marijuana use linked to heart problems
April 23rd, 2014
06:21 PM ET

Marijuana use linked to heart problems

Young people who use marijuana may be at risk for heart attacks and other serious cardiovascular problems, a new study suggests.

Researchers reviewed records from the French Addictovigilance Network, a national system of centers in France that gather information about drug abuse and dependence. From 2006 to 2010, they found 35 reports of patients who had experienced cardiovascular complications following cannabis use. The  study was published Tuesday in the Journal of the American Heart Association.

About 85% of the patients were men and their average age was 34. In nine cases the patient died.

While the study doesn't identify a particular level of risk of marijuana use, it does call for more research on the subject, and warns doctors that there seems to be at least some danger.

"Currently people think (cannabis is) harmless," says lead study author Emilie Jouanjus, at the Université Toulouse III – Paul Sabatier. "What I think is very important from my work is that we see cannabis use may lead to very serious complications on the cardiovascular system."

Jouanjus was surprised to find all but one of the patients with cardiovascular problems were under the age of 50. She believes this study shows only the tip of the iceberg, as people usually under-report their cannabis use.

"This study shows a some preliminary evidence of cardiovascular harm from marijuana but isn't conclusive,” Dr. Allen Taylor, chief of cardiology at Georgetown University School of Medicine, told CNN in an e-mail. “The study's limitations are important in that we can't know how high the risk is, just that there is a signal of risk between marijuana smoking and heart troubles.”

Taylor says it’s a shame that more isn't known about the potential harms of cannabis.

"It seems that public perception is ahead of the science," he says. "We should remain open to the scientific facts as they evolve."

Only 20% of patients in the study had a known history of heart disease or risk factors for heart disease. The other patients may have had unknown cardiovascular risk factors or a history that was not documented in the medical file.

“I'm not saying that any user of cannabis would suffer from any of these complications," Jouanjus says. But "we do not have enough information to say that cannabis use is safe."

Dr. Shereif Rezkalla. who wrote an editorial accompanying the study in JAHA, said doctors should be required to ask about marijuana use when they see a cardiac patient.

“The perception that marijuana is safe is deep-seated in the public and even amongst some health professionals,” says Rezkalla, a cardiologist at Marshfield Clinic in Marshfield, Wisconsin.

Taylor cautions that while this study doesn’t provide a final answer on the link between cannabis and serious heart problems, “it at least gives one pause to suggest to patients it may not be a heart-healthy habit."

Previous research has suggested marijuana use may double the risk of stroke in young adults.

soundoff (910 Responses)
  1. Arnold_s

    Are you kidding me? A study with 35 people? This is news?

    April 24, 2014 at 13:22 | Report abuse | Reply
    • Eeyore

      It wasn't a study of 35 people.

      April 24, 2014 at 13:58 | Report abuse |
    • Deek


      Even worse, it was 35 anecdotes. Over four years. With nothing concretely relating their heart issues to marijuana. If 50% of everyone in the US has tried pot and yet only about 9 people a year have an issue, which could have been pre-existing, how is this even a news story?

      April 24, 2014 at 14:06 | Report abuse |
    • Eeyore

      Why is it any less a news story than any other event or endeavor? CNN is probably not the only news outlet reporting it, so someone must think it's worthy of note if only to rile up a bunch of bozos who don't know what they're talking about. Seemed to work, didn't it?

      April 24, 2014 at 14:08 | Report abuse |
    • Deek

      Because people interpret "study" differently than scientists do. This is not a study. This is a call to arms. It says "hey guys, 35 people have had heart issues and it may be due to marijuana. We should study that." People read this and think "marijuana causes heart disease."

      Articles like this are why the news propagates so much misinformation.

      April 24, 2014 at 14:19 | Report abuse |
    • Eeyore

      Oh, bullish!t. It's not any "call to arms," you hysterical ninny.

      April 24, 2014 at 14:26 | Report abuse |
    • Deek

      Thank you for being a perfect example. I appreciate it.

      April 24, 2014 at 14:30 | Report abuse |
    • Will

      The truth hurts, doesn't it drug addict?

      April 25, 2014 at 08:45 | Report abuse |
  2. JohnB

    It boggles the mind that anyone could think that inhaling smoke into your lungs, smoke of any kind, would NOT be bad for your health. Sure people will say "you don't have to smoke it, there are other ways to partake..." But seriously, what's the percentage of pot users that DON'T smoke it?

    April 24, 2014 at 13:23 | Report abuse | Reply
    • Deek

      Do you really, truly, believe that all smoke is the same? Things as different as a few degrees of temperature, a few psi of pressure or a few % of O2 will drastically change the number of SOx and NOx produced in combustion. Furthermore, most of the pollutants in smoke that do damage (such as carbon monoxide in incomplete combustion), are on incredibly small scales.

      To think all smoke is the same is absolutely absurd. What you are combusting DRASTICALLY affects everything that is produced. Methane, if completely combusted, will produce smoke with nothing but water and carbon dioxide. Coal, on the other hand, puts mercury into our atmosphere unless scrubbers are used.

      It boggles my mind that people think that smoke is smoke regardless of what is combusted. The only way to truly measure the effect of one smoke vs. another is through scientific studies, some say that marijuana is bad but ALL agree that cigarette smoke is significantly worse than marijuana smoke.

      April 24, 2014 at 14:11 | Report abuse |
    • Eeyore

      Do they? Where are the long term large studies that show that? Can you cite any?

      April 24, 2014 at 14:13 | Report abuse |
    • Deek



      I wish that that exists for Google Scholar. You can also search on PubMed. Look for review articles if you are not used to searching for scientific reports. There are hundreds and I am not going to individually search them out for you.

      April 24, 2014 at 14:15 | Report abuse |
    • Eeyore

      You are if you want to be taken seriously. Otherwise, you're blowing as much smoke as everyone else here.

      April 24, 2014 at 14:16 | Report abuse |
    • Deek

      If you want to call out my facts, find facts that prove me wrong. Then I will find facts to prove me right. If you cannot first find facts proving me wrong, there is no onus on me to find facts proving me right.

      Stop trying to straw man my arguments by switching to whether or not I am going to Google something for you.

      April 24, 2014 at 14:21 | Report abuse |
    • Eeyore

      Sweetie, you made the claim. The onus is on you to back it up. There are some studies that show marijuana doesn't cause as much damage as tobacco, but that doesn't mean it is harmless as so many here want to pretend it is.

      I'm not opposed to legalizing pot. I'm just fed up with idiots who don't know how to read.

      April 24, 2014 at 14:25 | Report abuse |
    • Deek

      I am really confused. Are you saying that I should be citing everything I say on a news site? Hahahaha.

      April 24, 2014 at 14:28 | Report abuse |
    • JohnB

      Some smoke is more dangerous to inhale than others. One doesn't need a scientific study to say there isn't any smoke that is totally harmless to inhale.

      I had an uncle that smoke pot for 60 years. Never smoked a cigarette in his life. He died of COPD. COPD is a horrible way to die. I'm sure there are scientific studies that show smoking pot will not cause COPD. Wait a year, they'll reverse that finding. Wait another year, they'll reverse it again. My uncle died from the effects of smoking pot. I'm sure of that.

      April 24, 2014 at 15:13 | Report abuse |
    • Joe from QC

      Right. It couldn't have been from work pollution, or car exhaust, or 2nd hand smoke. Your scientifically expressed opinion is gospel enough for me!!!!!!!!!!!!!!!!

      April 24, 2014 at 16:11 | Report abuse |
  3. rh

    What about the research that shows that marijuana use causes DNA changes in sperm?

    April 24, 2014 at 13:24 | Report abuse | Reply
    • Howie

      Citation please. Otherwise no such studies exist.

      April 24, 2014 at 16:23 | Report abuse |
  4. William York


    The leading cause of death is being born.

    April 24, 2014 at 13:26 | Report abuse | Reply
  5. MICK

    The study found a CORRELATION not CAUSATION. Big difference. Also, cigs are factual killers. We all know this and yet it's still legal why?

    April 24, 2014 at 13:27 | Report abuse | Reply
    • D.I.

      Political agenda and money.

      April 24, 2014 at 15:42 | Report abuse |
  6. gossipwisdom

    "news" like this is why, more and more, I turn away from the mainstream news media. All these reports have catchy headlines but no substance. 35 people... The only news here is that CNN and much of the other media empires have become fronts for big pharma. But in related news... Doctors now want to implant a chip in your body and administer drugs via remote control. Yeah, that's safer.

    April 24, 2014 at 13:31 | Report abuse | Reply
    • steve

      The story was written by big pharma, get ready for a bunch of weird news story's that boarder line on propaganda. Everyone knows inhaling smoke is bad for you . That's not an issue.

      April 24, 2014 at 13:43 | Report abuse |
    • Eeyore

      How do you know it was "written by big pharma?"

      April 24, 2014 at 14:08 | Report abuse |
    • Heinrich

      Walmart is having a sale on tin foil

      April 25, 2014 at 07:18 | Report abuse |
  7. GW

    Double Cheeseburgers cause cardiovascular problems too! They are still legal, and millions of people consume them everyday!

    April 24, 2014 at 13:32 | Report abuse | Reply
  8. Jerry

    Anyone who took a descent science class in school can see that this study is flawed on so many levels that it amounts to pure propaganda. If you are alive you will die from heart failure. There isn't even mention of a control group. This study amounts to that of an opinion.

    April 24, 2014 at 13:33 | Report abuse | Reply
    • john

      Should've taken a descent English class.

      April 24, 2014 at 13:40 | Report abuse |
    • HeyEugene

      Of course you are correct about the study. I'd also like to know more about "descent science"...is that just science which makes you fall down?

      April 24, 2014 at 13:42 | Report abuse |
    • Jerry

      Nah, they don't teach the fall down principle very well in high school where nearly everyone goes. Egh if the course mentioned Joule's then it was a fall down science class. The scientific study process however is taught in nearly every high school. John you obviously need to get a life if your entire life is focused on using proper grammar on a silly forum. If you got the stick out of your butt you might actually get some friends.

      April 24, 2014 at 13:58 | Report abuse |
    • Destry

      Also this study was done in FRANCE where if you are caught with even just a stem you can go to jail for LIFE...

      April 24, 2014 at 14:05 | Report abuse |
  9. jack

    Just like anything, marijuana needs to be used in moderation just like everything else. Too much of anything is a bad thing. Some of these patients could have been heavy users, they could have had pre existing health problems, they could have smoked a certain kind that was laced with something. There are a lot of variables and not just one conclusion.

    April 24, 2014 at 13:37 | Report abuse | Reply
    • D.I.

      That is pretty much what I was thinking when I read this. And most people that have a proper education read this and make a similar argument. Besides, it has been proven when doing any study, you need a larger group than just 35- look at how many people were tested when the first 4 blood types were ided and how many blood types were missed.

      If a claim is to be made that one causes the other, then you need to study people that have neither and expose them to the element.

      April 24, 2014 at 15:58 | Report abuse |
  10. Kimberly Adams

    35 people in 4 years? This is research? REALLY? CNN, I would be embarrassed to even print this in your HEADLINE NEWS. You should be ashamed to call this journalism. Certainly you can do better than this. This sounds more like Fox News. Tsk! Tsk! I am disappointed.

    April 24, 2014 at 13:38 | Report abuse | Reply
  11. Larry

    35 people in 4 years of whom 9 died??? Really?....More people have died of lighning stikes in one year than that and over 4 years more people have died of shark attacks both of which are extremely rare. I fail to see the significance of this....just researchers who are afraid to lose their jobs.

    April 24, 2014 at 13:39 | Report abuse | Reply
    • Eeyore

      That's not what the study showed. You didn't read it, did you? You weren't even able to read the article and understand the numbers that were cited.

      April 24, 2014 at 14:15 | Report abuse |
  12. PushingBack

    I've never used the stuff and don't know if I will ever try it. That being said, this looks like some ridiculous contrivance of a linkage between the two. The quote from Ms. Jouanjus sounds like she is wanting to connect the two. But all it sounds like to me is that some people that have heart attacks may use marijuana. Or some that use marijuana may have a heart attack.

    Gee, I wonder how many people who have had a heart attack drank water? Or breathed air?

    April 24, 2014 at 13:44 | Report abuse | Reply
  13. Mike

    1. There does need to be a larger sample size.
    2. There does need to be a control group.
    3. Both the test group and the control group need to be divided into marijuana only users versus marijuana plus other drug users.
    4. There needs to be a comparison between infrequent users (once in a blue moon), casual users (a few times a month), and daily users.
    5. There needs to be a comparison between marijuana-only users and non-MJ users who are users of other drugs (e.g. alcohol).

    Just saying marijuana users get heart disease is meaningless, the whole population gets heart disease. It's one of the (if not THE) top killers out there.

    April 24, 2014 at 13:45 | Report abuse | Reply
  14. PushingBack

    I have some data here that shows that heart attacks are caused by French researchers.

    April 24, 2014 at 13:51 | Report abuse | Reply
  15. Mark

    It's not the Pot causing the heart issues – it's the horrible munchies one consumes afterward....

    April 24, 2014 at 13:51 | Report abuse | Reply
  16. Chet Roberson

    Both CNN and Fox News can finally agree on something. They are both willing to present ridiculously flawed medical studies as new. Congratulations CNN! You are every bit as much of a propaganda machine as Fox. I wonder what your own Sanjay Gupta would say. Shame on the idiot that wrote this article and the editor who published it.

    April 24, 2014 at 13:53 | Report abuse | Reply
    • Eeyore

      How is reporting something like this wrong?

      April 24, 2014 at 13:57 | Report abuse |
    • Jerry

      Eyeore it is wrong because they are using an unscientific study to persuade people. There isn't even mention of a control group. Everyone dies of heart failure. If you get 100 people together for a study lasting one or 2 years you would be very very lucky if none of them died. This is not a scientific study.....period. And CNN is trying to pass it off as one.

      April 24, 2014 at 14:04 | Report abuse |
    • Eeyore

      How are they "using it to persuade people" of anything other than the fact that more study might be warranted? Why would you be so upset about that?

      April 24, 2014 at 14:09 | Report abuse |
    • Chet Roberson


      Did I say it was wrong? Or was I criticizing the staff at CNN for their judgement and journalist voice?
      It's not wrong for you to troll, but I question your opinion on anything based on what you write. I don't think we'd get along. Have a nice day.

      April 24, 2014 at 14:25 | Report abuse |
    • Eeyore

      Oh, gosh, however WILL I survive??

      Bite me.

      April 25, 2014 at 18:47 | Report abuse |
  17. palintwit

    We can all take a lesson from the tea party patriots and stick to guzzling Everclear from mason jars. Then they boink their cousins.

    April 24, 2014 at 14:01 | Report abuse | Reply
    • Replace

      Replace the word cousins with the words farm animals and then it's so true!

      April 24, 2014 at 16:01 | Report abuse |
  18. Destry

    63% of the 35 reported claims would have had cardiovascular problems regardless of marijuana use.

    April 24, 2014 at 14:03 | Report abuse | Reply
  19. Jerry

    Pay attention to any study you see on these sites. Use what you learned about scientific processes from middle school. They will help you catch when people are just blowing hot air to get you to think along their lines. This study is not scientific.

    April 24, 2014 at 14:08 | Report abuse | Reply
    • Eeyore

      Why would questioning the safety of marijuana use be such a bad thing? This may not be a "scientific study," but that doesn't mean that what doctors found doesn't merit further investigation, does it?

      Why are some of you so very worried about that possibility?

      April 24, 2014 at 14:12 | Report abuse |
    • Jerry

      I am more worried about people being manipulated time and time again by false data. It happens all the time especially in politics where both sides are guilty.

      April 24, 2014 at 14:18 | Report abuse |
    • Eeyore

      Who's being "manipulated by false data" here? I don't imagine that this particular study is going to be cited in arguments by legislators. So what's the friggin' big deal?

      April 24, 2014 at 14:22 | Report abuse |
    • Jerry

      The big deal is that a lot of people see a brand name on an article and think everything they say is 100 percent true. People are lazy and like to have the thinking done for them. By manipulating information you can convince those people to do anything from cleaning their house to killing millions of innocent people. Then the people who actually do think things through for themselves but do not conform to the "Accepted Information" becomes outcast.

      April 24, 2014 at 14:27 | Report abuse |
    • Sid

      "I don't imagine that this particular study is going to be cited in arguments by legislators"

      please, oh PLEASE tell me you're willing to put $ on that!

      April 24, 2014 at 15:16 | Report abuse |
    • Eeyore

      Do let me know when you see any legislature doing so, moron.

      April 25, 2014 at 18:48 | Report abuse |
  20. BlueToo4You

    It's not the pot, it's the Twinkies. No research needed for that no-brainer.

    April 24, 2014 at 14:13 | Report abuse | Reply
  21. Noneya

    Ah yes, the typical stare tactic against pot. The lairs for decades have been lying about pot... Now that the truth comes out they scramble to throw anything they can find agains the wall to see if it sticks. PATHETIC.

    April 24, 2014 at 14:26 | Report abuse | Reply
  22. palintwit

    Q: Why do tea party patriots always wear size 34 floppy clown shoes?
    A: Because they are more dignified looking than the size 42's.

    April 24, 2014 at 14:27 | Report abuse | Reply
  23. ghostown

    35 reports between 2006 to 2010 is hardly a definitive link between marijuana use and heart problems. If this where any other substance this weak data wouldn't make the news.

    April 24, 2014 at 14:38 | Report abuse | Reply
    • ghostown

      Typo if this were any other substance.

      April 24, 2014 at 14:43 | Report abuse |
    • jan

      sounds like all you clowns are totally reactive. if this had been a "report shows marijuana smokers maintain longer erections than non-smokers" you would be all over it like white on rice.

      mesounds I could care one less or the other. my only opinion is that alcohol unrestricted use does far more major damage; too much pot or anyhing else, causes problems. but, don't just necessarily freak out because someone cites one of many studies. most of you sound like someone took your lollipop away. jeez.

      April 24, 2014 at 15:30 | Report abuse |
  24. patrick

    There is a difference between smoking or eating pot! Is this study treating them the same?

    April 24, 2014 at 14:53 | Report abuse | Reply
    • Jerry

      It doesn't matter, this study did not follow protocol that would have made it a scientific study. The "study" is nothing more than propaganda. Think back to seventh grade science class and you will see how flawed this study is. Not even a control group.

      April 24, 2014 at 14:59 | Report abuse |
  25. Sid

    I totally called this last fall! FUD campaign is in massive overdrive as Colorado & Washington show just how "dangerous" this is! real responsible reporting, cnn...

    April 24, 2014 at 15:13 | Report abuse | Reply
  26. swyrlpr

    Smoking weed may cause heart problems?

    Someone forget to tell Willie Nelson he should be dead already.

    April 24, 2014 at 15:24 | Report abuse | Reply
  27. WDIM

    They are so reaching for something negative to write. 34 people in 4 years I fail to see a correlation. So 34 people had preexiting condition that smoking brought to the surface. Only 9 people died from these prexisting conditions. So 25 other people were able to receive treatment and get their heart problem taken care of. So 25 people's lives were saved by bringing out a problem that they may not of even known about.

    The article says nothing about the lifestyle of these people. Did they smoke tobacco? Did the drink alcohol? Did the abuse other drugs as well? Just because a person has a heart attack after they smoke cannibis doesn't mean cannibis caused the heart attack it is more likely the person's entire lifestyle and family history that caused the heart attack. And only 34 people in 4 years out of the entire country of France that is statiscally insignificant.

    April 24, 2014 at 15:38 | Report abuse | Reply
    • swyrlpr

      Considering that in 2008 alone over 50,000 french citizens died from cardiovascular disorders, 9 people who smoked pot is not insignificant. In fact, it would seem that smoking pot might actually help prevent death from cardiovascular disease as the percentage of pot smokers that die from heart problems is considerably lower (400x) than the percentage of the total population that died.

      I posted the figures about an hour and a half ago.

      April 24, 2014 at 15:44 | Report abuse |
  28. Drugs Kill

    You will live forever is you don't take drugs. You take drugs once, you've ended your immortality.

    April 24, 2014 at 15:45 | Report abuse | Reply
    • WDIM

      The human brain creates its own drugs. Dopamine, DHT, and oxitocin to name a few very strong drugs that are created by our own bodies. We are all on drugs!

      April 24, 2014 at 15:55 | Report abuse |
  29. swyrlpr

    This is what real medical research looks like


    April 24, 2014 at 15:58 | Report abuse | Reply
    • swyrlpr

      In case anyone wants to read something that translate this report into english...


      April 24, 2014 at 16:00 | Report abuse |
  30. 420bandit

    Pot helps ugly girls get laid..where's that story?

    April 24, 2014 at 15:59 | Report abuse | Reply
    • swyrlpr

      You will find it right after the article on how alcohol helps white people dance.

      April 24, 2014 at 16:01 | Report abuse |
  31. Dub

    When I smoke I notice that sometimes my heart pounds pretty hard, and I notice tachacardia (increased heart rate). It worries me. Now I know why... I think i will ask my doctor about this.

    April 24, 2014 at 16:16 | Report abuse | Reply
    • swyrlpr

      You may notice a similar affect after drinking any beverage with caffeine.

      April 24, 2014 at 16:47 | Report abuse |
  32. 1776usa2016

    Welcome to the New Reefer Madness


    April 24, 2014 at 16:25 | Report abuse | Reply
  33. keeroc15

    CNN stooping even lower for negative cannabis stories. About time for William Bennett again. Hey CNN run these BS stories by Sanjay Gupta first. You might avoid embarrassing yourselves..

    April 24, 2014 at 17:02 | Report abuse | Reply
    • Mike

      Oh please, not the Bennett, anything but the Bennett. The maladroit prognosticator of sun ripened BS!

      April 24, 2014 at 21:47 | Report abuse |
  34. Maskelyne

    Let's look at those numbers. Nine deaths in four years among 1.2 million regular cannabis users in France. Assuming the cited reporting rate of 5%, there might be 180 deaths. That's a death rate from heart disease of 3.8 per 100,000 per year. A quick search yielded no death rates by age for France, but in the U.S., the rate heart disease death rate among men 25-34 is 11 per 100,000. Even accounting for the "French paradox", the conclusion may well be that pot smoking prevents heart disease. I challenge anyone to show how this "study" is anything other than drug war propaganda.

    April 24, 2014 at 17:16 | Report abuse | Reply
  35. theosocrates

    Any and ALL 'Writers' currently bashing cannabis use (medical marijuana) are doing so FOR-PROFIT either directly, or indirectly as 3rd party shills or paycheck dependent cogs in the machine of an already enormously out-of-control pharmaceutical (experimental chemistry) INDUSTRY.

    These hit-pieces have always kept natural growing plants 'illegal' because simple natural remedies remove ENORMOUS profit margins for already obnoxiously wealthy super-villains. Their pharmaceutical/chemical companies depend on 'patents' (intellectual property legal claims) for their man-made (unnatural) chemicals.

    NATURE itself, cannot be 'patented' (claimed legal 'ownership' of). This is why ALL natural cures & treatments are aggressively suppressed by the FOR-PROFIT INDUSTRIES that keep poisoning Americans with "FDA Approved" pharmaceuticals.

    FDA approved pharmaceuticals currently kill more Americans each year than cocaine, heroin, AND crystal meth COMBINED!!!

    That statistic refers to western 'medicines' being taken AS PRESCRIBED – not 'abuse' of them. FDA approved & regulated USE of modern western pharmaceuticals (chemicals) KILLS AMERICANS.

    In THOUSANDS of years of use & testing, not one single case of 'death' has been directly attributed to marijuana use. It has been regarded highly throughout cultures ancient & modern, for it's medicinal properties AND it's safety.

    These slimy hit-pieces have all been timed & coordinated by very Big-Monied-Interests who aim to stem the tide of Humanity waking up to a LYING, CHEATING, CORRUPT governmental system of corporate control. Enough is enough. Have some self respect, if you claim to be people of science.

    PR 'talking-points' handed down to you from the corporate drug-lord masters of your 'medical' INDUSTRY racket – is NOT science. THOUSANDS OF YEARS of results, IS. Stop hurting people for money! Stop helping those who do! Every doctor knows these truths. Stop selling your souls for a quick buck.

    April 24, 2014 at 17:32 | Report abuse | Reply
    • keeroc15

      Thank You . Nice post.

      April 24, 2014 at 18:10 | Report abuse |
    • LMCofVB

      Thank you! Well said.

      April 24, 2014 at 18:19 | Report abuse |
  36. LMCofVB

    Give me a break. This is how information is manipulated to make something out of nothing. Note: I use CAPS within this WebMD excerpt for emphasis, not because I’m “screaming” at anyone.

    “Marijuana use MIGHT contribute to heart and artery disease among young and middle-aged adults, PARTICULARLY THOSE ALREADY AT RISK FOR CARDIOVASCULAR PROBLEMS, a SMALL French study reports.

    By reviewing reported cases of marijuana abuse in France between 2006 and 2010, researchers identified 35 users (OUT OF ALMOST TWO THOUSAND) who suffered heart disease - including 20 heart attacks and nine deaths.

    The percentage of heart disease cases among reported marijuana abusers more than tripled during those five years, rising from 1.1 percent of cases to 3.6 percent, the investigators reported.
    In nearly half the cases, THE AFFLICTED POT USERS ALREADY HAD RISK FACTORS for heart disease such as high blood pressure or high cholesterol, the study authors said.

    In 16 of the 35 cases (46 percent OF THE 1.1 TO 3.6 PERCENT OF THE TOTAL STUDIED), the patients EITHER HAD PERSONAL RISK FACTORS FOR HEART DISEASE OR A FAMILY HISTORY OF HEART PROBLEMS, according to the report.”

    In my opinion (my opinion, no one has to agree, so don’t shoot or chastise the messenger) medicinal marijuana is not being legalized in the USA mainly because of the pharmaceuticals. It would impinge on their profit margin. Medical marijuana can be produced without THC, the main ingredient causing the high. It is a cash crop for farmers, it is a tax revenue for governments. The fact that it can be produced and marketed without any actions by pharmaceuticals, can be made available at low cost, and has little, if any, side effects, again – in my opinion, are THE reasons for preventing this country from going forward and making available a valuable medicine to people who need it. How many serious illnesses could possibly be treated? How many prescription drugs could be replaced? And let's face some facts here. Marijuana should not be used medicinally because it MIGHT cause heart problems?? Then why do all the FDA approved prescription medicines already in use come with a three to six page caution of all the side effects that could make you worse or even kill you?

    April 24, 2014 at 18:13 | Report abuse | Reply
  37. Paul Pot

    Another study that has people laughing.
    Dr Sanjay Gupta warned us about "studies" manufactured by the prohibition industry to prove there is something wrong with marijuana.

    April 24, 2014 at 18:58 | Report abuse | Reply
  38. BOxer4ever

    take it off schedule 1 list, I’m having issues as a 20 year-old getting a part-time job for this summer. I live in Washington state and have a medical marijuana license, I go to college full-time and I’m still afraid i will get refused.

    April 24, 2014 at 20:14 | Report abuse | Reply
  39. Corey

    This is a b.s story get your facts straight. This makes my faith in humanity fall. Don't be a sheep ans believe everything you hear online

    April 24, 2014 at 21:42 | Report abuse | Reply
  40. Big_D

    35 people over four years? I bet walking a dog is more likely to cause cardio problems for people. This is just garbage propaganda. CNN should figure out who fed them this garbage and fire them.

    April 24, 2014 at 22:01 | Report abuse | Reply
  41. Nicholas black

    Lies lies lies if eaten or use topically cannabis promotes blood flow.. N bone growth n relieves pain .. True story

    April 24, 2014 at 22:11 | Report abuse | Reply
  42. Xman

    i had very strong chest pains and very irregular heart rhythms each time i smoked pot in a tobacco leaf. Im 25 been smoking pot this way since i was 13. I recently stopped and all my issues have gone away... maybe this is caused by people smoking pot in a tobacco leaf? would not know but my advise for the small % that have issues is to stop

    April 24, 2014 at 22:43 | Report abuse | Reply
  43. pjs

    sounds like a bunch of propaganda and mis-information
    someone doesnt like the legalization boon
    get over it
    Its here to stay

    April 24, 2014 at 22:53 | Report abuse | Reply
  44. nikkitravis77

    So, the risk of getting cancer, heart failure, death from an infection is better just because my drug for Crohns' Disease comes from Pfizer? BS!

    April 25, 2014 at 01:50 | Report abuse | Reply
  45. eirikr1965

    Can we look at a few quotes from the actual research?
    "46% of cases (16/35): 9 subjects had personal and 7 had familial cardiovascular history.
    (60%) were identified as concomitant tobacco smokers, of whom 6 had personal cardiovascular history.
    (36%) were overweight, and 1 was in the first obese class (body mass index=32.1 kg/m2).

    Another possible explanation for the small number of cases is that cardiovascular disorders may hardly be connected to cannabis considering the lack of evidence‐based data in this area and especially because cannabis‐related disorders are frequently restricted to neuropsychiatric impairments. For instance, in a recent clinical review oriented to general practice in primary care that gives advice in the management of cannabis‐related disorders, the cardiovascular system is not even mentioned

    events were too few assess whether the cardiovascular events were actually due to the cannabis use rather than some other risk factors using statistical modeling

    According to previous findings, cannabis use might be harmless to most young healthy users, whereas patients with preexisting cardiovascular weaknesses appear to be prone to the harmful effects of cannabis.

    A population‐based study conducted in the area of preventive cardiology emphasized a strong association with unhealthy behaviors such as high caloric intake, tobacco smoking, and use of other illicit drugs, although it did not reveal any independent association between cannabis use and the occurrence of cardiovascular risk factors in young adults.

    April 25, 2014 at 02:05 | Report abuse | Reply
  46. Peter Weed

    Tell me something about Aspirin, please! How many died from it till today?

    April 25, 2014 at 04:21 | Report abuse | Reply
  47. Haha

    You mean pots not perfect?

    April 25, 2014 at 05:27 | Report abuse | Reply
  48. Lou

    This stuff is funded by the DEA and pharmaceutical industries since they are both taking big hits in their job security when natural medicine starts taking over. And, those DEA goons might have to actually get real jobs instead of hasseling citizens and bothering people that grow a few plants. Too bad. Weed is safe and soon to be legal everywhere. Sorry but those are the breaks. Keep writing this crap though, it's hilarious.

    April 25, 2014 at 06:02 | Report abuse | Reply
    • Will

      Drug addict.

      April 25, 2014 at 08:55 | Report abuse |
  49. Raja

    This scientist should have their degree taken from them and they never allowed to think again.
    Since cannabis is illegal in most of the world and how it is grown and harvested is not controlled by anyone you can't guarantee that it is pure and unadulterated.
    Anyone who has grown tomatoes will tell you that your crop can be destroyed very quickly by spider mites and thrips, to name just two of the many pest that can affect your harvest. The most effective insecticide you can use is only for ornamental plantings, not to be consumed by humans or animals but do you really think that someone growing an illegal product is going to worry about what happens after it leaves his hands. Don't you think that consuming a pesticide might have an effect on your heart and lungs.

    April 25, 2014 at 08:03 | Report abuse | Reply
    • Will

      The truth hurts, doesn't it drug addict ?

      April 25, 2014 at 08:55 | Report abuse |
  50. daniel

    35 patients in 4 years is enough to link something with something else? thirty-five??????????????????????

    April 25, 2014 at 08:48 | Report abuse | Reply
    • Will

      You're a worthless drug addict.

      April 25, 2014 at 08:55 | Report abuse |
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