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CT scans show cigarettes are harder on the lungs than marijuana

montebicyclelo

> Many have touted smoking marijuana as a safer alternative to cigarettes

Wierd take, given that they are completely different drugs, with completely different effects on the brain, with the only similarity being that they are both ingested via smoke.

zwnow

And any kind of smoke isn't good for the lungs. I'm tired of people pretending that Marijuana is that wonder drug that's somehow "healthier" than smoking. It's just less unhealthy, which still makes it unhealthy.

btreecat

Sitting in traffic is unhealthy, eating junk food is unhealthy, living with excessive heat is unhealthy, poverty is unhealthy, too much water is unhealthy.

Lots of things are unhealthy. Some of those are many degrees worse than others, and some only in certain context.

zwnow

Some things you can actively avoid though. And inhaling smoke on a regular basis is one of them. I'm particularly sensitive about this topic because I live in a country in which my tax money is used to finance treatment of illnesses that people self inflicted due to smoking.

elif

There are neurogenic, anti-tumor, and anti-inflammatory properties and no direct chemical addiction mechanisms as present in nicotine.

Additionally your statement about "any kind of smoke" while kind of true does not recognize the disproportionate concentration of carcinogens specific to cigarette smoke.

It also misses the disclaimer that nearly as many cannabis users vape and consume edibles (roughly 70%) as do smoke (only 79%) which is certainly better than smoke, even before you add the benefits of water filtration and cooling common for marijuana users.

epgui

You’re talking about different things. The study and the topic at hand is not addiction or cancer, it’s COPD, emphysema, and lung volume.

Any smoke (anything hot, even steam) will cause lung damage. They’re incredibly fragile organs. (biochemist)

eru

> There are neurogenic, anti-tumor, and anti-inflammatory properties and no direct chemical addiction mechanisms as present in nicotine.

Huh? Nicotine ain't addictive either. See https://gwern.net/nicotine for more than you wanted to know.

Just don't smoke. Get your fix (whether nicotine or marijuana) in other ways. Vape or chew gum or use edibles or stick on a nicotine plaster, etc.

zwnow

Where are the long time studies on vaping? I regularly read news about vaping with new findings on it being unhealthy... Not gonna defend smoking but also not gonna defend any other loser behavior regarding drugs.

kubb

Just use a vaporizer and the problem is gone. This one is good:

https://www.storz-bickel.com/en/venty

eru

Or use edibles (for marijuana), or gums or plasters (for nicotine). So many better options than setting leaves on fire.

eru

Yes. And you can get the mind-altering effects of both marijuana and tobacco without setting them on fire.

eru

Eh, they are both fairly harmless on the brain. (At least directly.)

What kills you is the tar in your lungs (and on the way there, like your throat). And you get that from burning stuff in general.

JimmyBiscuit

I havent seen anything about frequency in the article. Unless they control for that it doesnt feel like you should claim that weed is somehow safer. Of course you will have less damage from smoking a few joints a day (which would be very heavy use) vs the standart amount of cigarettes a cigarette smoker smokes.

consp

Isn't the "natural" reduction in frequency a factor which should not be accounted for as it might actually be the driving force behind it?

bdavbdav

Is this not a similar argument to condoms / birth control effectiveness? Condoms are 100% effective if used properly and they don’t burst. The failure proportion is primarily misuse. You build in the misuse / other factors into the effectiveness rate.

eru

If you want an even starker examples: abstinence is 100% effective, if 'used' according to protocol.

AStonesThrow

You'd be surprised about artificial contraception. Sure, when used they can be highly effective to prevent pregnancy, but they also train people to do risky behavior.

It's sort of like giving away free parachutes and plane rides to everyone. Sure, that support will encourage lots of skydiving. But eventually, isn't someone going to go up without a parachute, say "YOLO" and dive out anyway?

The same thing happens with contracepting, promiscuous men and women: they become accustomed to using one another as objects and free, easy access to sex whenever. But when that contraception isn't readily available at hand, they're going ahead anyway. They're going to do it regardless, because it's the habit they're accustomed to now.

So on balance, it's really been found that free access to artificial contraception tends to encourage and increase unplanned/unwanted pregnancies. And that's exactly why it's so plentiful, because the goal is the opposite of what you may think...

everdrive

I never see anyone describe just why Marijuana is less harmful than cigarettes (or apparently e-cigarettes) and it drives me up the wall.

My intuition would be that this is due to frequency, since a normal person would smoke weed far less often than they would smoke nicotine, and this is a really important distinction. If frequency is important to this question, then Marijuana smoke is not actually safer, but is just enjoyed more rarely. Maybe the lungs have a chance to clear themselves out and reduce inflammation between marijuana sessions? Just asking about the lifetime impact on users makes no sense since these drugs have totally different usage profiles.

kirsebaer

Tobacco absorbs and concentrates radioactive metals in soil and fertilizers. Cannabis does not do this. https://www.cdc.gov/radiation-health/data-research/facts-sta...

The tobacco industry was well-aware of the risk from radioactivity since the 1950s. https://www.uclahealth.org/news/release/big-tobacco-knew-rad...

everdrive

Thanks for the information. I wasn't aware of this, and this definitely aligns with the findings in the article.

eru

I'm going out on a limb here, but I'm fairly sure that when you put _smoke_ in your lungs, radioactivity is the least of your worries.

SavinMyLungz

My understanding is that inhaling polonium is one of the main vectors of lung cancer in tobacco smokers. Smoke inhalation is bad, afaik it's the main way people die in structure fires, smoke has carbon monoxide and formaldehyde and all sorts of bad stuff, but tobacco is particularly deadly, and afaik polonium from the fertilizer is a big part of why that is.

throwup238

The answer is industrial processing. Inhaling combustants is bad no matter the plant matter but the tobacco industry has over a century of experience in optimizing their product which leads to a lot of nasty chemicals that have been grandfathered in as a historical accident.

They “reconstitute” tobacco dust and other waste into usable material via binders (“sheet tobacco”), add humectants to keep the tobacco from drying out, preservatives to keep it from oxidizing, shit to enhance the flavor, “puff up” tobacco with a bunch of chemicals so it takes up more volume, and so on. Since the 2000s there’s also compounds similar to flame retardants (!!!) in the wrapping so that the cigarette goes out if you fall asleep, instead of burning your house down. Much of these additions come from reprocessing the waste from previous steps to “minimize waste.”

Marijuana on the other hand is religiously tested for pesticides and other contaminants in most states. However that industry isn’t far behind: a friend loves diamond/oil infused blunts and to me it’s blatantly obvious that they’re using some of the same techniques to repurpose lost terpenes and adding synthetic aromatics that were never tested for combustion.

everdrive

I would understand this to mean that natural cigarettes (just some tobacco in paper) would be much healthier. However, I don't think this is true either. I hear you regarding the shocking and astoundingly bad chemicals added to the process, but my impression is that any kind of smoke is also quite bad for you. (as an aside, we're cursed with flame retardant chemicals in our couches and mattresses because people are too stupid not to fall asleep while smoking)

AStonesThrow

I feel like the harms of alcohol are also magnified by adulterants here. For example, an alcoholic will often choose dirt-cheap beer or spirits to consume on the regular. Is that stuff pure and clean? No. There is no requirement to label ingredients in a bottle of wine, beer, or vodka. You can put any old stuff in there as long as you're not outright poisoning people.

They're going to a convenience store, or a dive bar that carries the worst stuff and they're going to drink that, day-in, day-out, to excess.

I believe that, if drinkers had access to pure and clean ethanol-based beverages, and also maintained good nutrition and a decent diet, they wouldn't get all this liver failure and horrific metabolic stuff that they suffer as alcoholics. I feel it's often tangential to the substance itself.

When I smoked, I often picked up clove cigarettes. My hairdresser friend with purple hair advised me that the molecules of clove smoke were huge compared to tobacco smoke and I was killing myself that much faster. I thank President Obama for finally closing out the clove cigarette market. I was eventually smoking American Spirits, which are mass-market, but touted as extra pure or clean. Who knows, really?

throwup238

In that case they’re not adulterants but natural byproducts of fermentation. That’s why most liquors are aged, to give the chemical reactions time to eliminate those byproducts (like trace amounts of methanol from fermented pectin).

A “fun” experiment to run along those lines is making prison hooch* or using turbo yeast. You can get anywhere from 20-30% ABV in a week or two, but if you drink it immediately it will result in the worst hangover you’ve ever had. It takes months of aging for it to become drinkable.

* The PrisonHooch subreddit is delightful. Who doesn’t want liquor made from Nerds candy or Gatorade?

eru

> When I smoked, I often picked up clove cigarettes. My hairdresser friend with purple hair advised me that the molecules of clove smoke were huge compared to tobacco smoke and I was killing myself that much faster. I thank President Obama for finally closing out the clove cigarette market. I was eventually smoking American Spirits, which are mass-market, but touted as extra pure or clean. Who knows, really?

Eh, putting any kind of smoke in your lungs is bad for you. Exactly what kind of plant matter you are burning is mostly a rounding error.

Go and vape, if you want to consume tobacco or marijuana.

bawolff

So according to https://www.canada.ca/en/health-canada/services/drugs-medica... about 29% of male uses use canabis 5-6 times a week. Presumably the top 5% smoke canabis even more.

You might be right about average user being less, but there are still enough people who use it all the time that i would expect negative effects to show up in them, if it was only about frequency of use. Like the top 1% of canabis smokers probably smokes as much as the average cigarette smoker, so if its just about dose we should still see it.

luma

I think their point isn't the number of people, but that a heavy weed smoker might maybe run through a few joints in a day while cigarette smokers might run through a couple dozen.

eru

> [...] would smoke weed far less often than they would smoke nicotine, [...]

Nobody smokes nicotine. People smoke tobacco. And it's that very smoke that's bad for you.

Just don't inhale smoke (whether marijuana or tobacco). You can vape or take edibles or use a nicotine plaster or chew a gum, etc. Compared to those alternatives, whether you set fire to marijuana or tobacco or toilet paper is pretty much a rounding error.

lyu07282

There was research on that, low or heavy marijuana use makes no difference. It just doesn't cause cancer, that's pretty much established fact at this point. There were substances in THC found that kill cancer cells, so whatever negative effects it does have (marijuana has 4 times as much tar than cigarettes) seem to be cancelled out.

https://pmc.ncbi.nlm.nih.gov/articles/PMC1277837/

https://www.washingtonpost.com/wp-dyn/content/article/2006/0...

rikafurude21

Sorry but any kind of smoke in your lungs causes cancer. Marijuana smokers have this bad habit of claiming 0 downsides to their favorite drug just because it was historically demonized. Be honest about the cons.

swores

And yet they're the person who linked to a study supporting their claim, while you didn't. It's easy to believe your claim, but without evidence it's also easy to believe theirs. Posting your personal assumption isn't helping the argument on either side.

jajko

Smoke tobacco bought in a package, and smoke just tobacco from cigarettes. Apart from cigarettes one being absolutely disgusting, it feels like there is something extra. I'd expect some addiction-enhancing stuff that also increases cancer rates, on top of that paper which is also carcinogenic to smoke.

Better comparison may be tobacco smoked in pipe but inhaled in same way as weed, and weed. But nobody smokes pipes like that.

mywacaday

Way back in my college days we mixed weed and tobacco in joints, I presume this was the worst of both worlds?

oneeyedpigeon

Very common in the UK and Europe where hash was more prevalent than flower until fairly recently. The prevailing wisdom would say not as bad as tobacco, worse than just pure weed, worse than vaping or an alternative method of consumption than combustion.

eru

Depends. You probably don't smoke as many of those as your typical cigarette chain smoker?

SavinMyLungz

Tangentially, since moving to edibles to avoid damaging my lungs and hopefully live longer, I've noticed that I don't have cravings for edibles the way I do with smoking flower. Eg, if I smoke one day, then I will feel a craving to smoke for the next week or so. But if I eat edibles one day but not the next, I don't notice any craving.

My hypothesis is that it's similar to cigarettes where the nicotine is much more addictive in combination with MAOIs in the cigarette. I don't know that MAOIs are the culprit here, I haven't looked into it. And this could be idiosyncratic to me, of course.

Just another reason not to smoke. The cannabis industry in my state has perfected gummies and driven the price down to the point it's not much more expensive than smoking, even with my really high tolerance, and the dispensary will deliver them to my house, so I'm all out of excuses.

Mc_Big_G

I'd like to see smoking compare to vaping natural herb. It seems like the obvious, healthier choice.

eru

Well, putting any kind of smoke in your lungs is bad.

The difference between vaping and smoking dwarfs the relative rounding error between tobacco vs marijuana in terms of direct health effects.

(There are indirect health effects, of course. Marijuana is more likely to give you the munchies. Tobacco is more likely to help you with weight loss, if anything.)

rich_sasha

Either way I don't want this shit in my lungs. Knowing it's less bad than one of the worst carcinogens out there is little comfort.

Broken_Hippo

I mean, fine. Don't do it then. Few people care if you personally do and if they pressure you, they aren't your friends.

This sort of thing really isn't about giving anyone comfort. It is an attempt to learn so folks can use them to understand the world better and the ways our bodies interact with it. It might result in harm reduction in other people, which benefits society in general.