Marijuana Smoking Associated With Rapid Decline in FEV1

[gerald]

Not too surprising in that smoking marijuana is still smoking and just as bad for you.

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Marijuana Smoking Associated With Rapid Decline in FEV1 for Older Adults

SAN DIEGO — Marijuana smoking leads to rapid decline in forced expiratory volume (FEV1) in adults ≥ 40 years, imparting risks similar to cigarette smoking, according to research presented at the annual American Thoracic Society International Conference, held May 18-23, 2018, in San Diego, California.

“We hypothesized that the effects of marijuana smoking on lung function are determined by the lifetime burden of smoking,” stated lead author Wan-Cheng Tan, MD, associate professor at the The James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research, British Columbia University in Vancouver.

This study's principal aim was to determine the longitudinal effect of marijuana smoking on the FEV1 of adults ≥ 40 years. Researchers recruited 5291 participants from the general population in Canada. Participants were interviewed via questionnaires to determine respiratory history and marijuana and tobacco smoking. The study subgroups included 43.5% (n=2299) who never smoked marijuana or tobacco, 36.4% (n=1926) who only smoked cigarettes, 3.4% (n=181) who only smoked marijuana, and "1 6.7"% (n=885) who smoked both marijuana and cigarettes. To determine whether smoking marijuana was associated with increased decline in FEV1 compared with the non-marijuana and non-cigarette smokers, study investigators used a linear mixed effects model.

To establish a baseline, spirometric tests were performed on a longitudinal cohort of individuals before and after they received 200 µg of salbutamol. Thereafter, participants were assessed at 18-month intervals. Adjustments were made for baseline FEV1, concomitant tobacco smoking, sex, age, body mass index, and the interface between time and FEV1 at baseline.

The increased FEV1 decline for marijuana smokers vs nonsmokers (β -14.57; 95% CI, -22.74 to -6.41) was similar to that of cigarette smokers vs nonsmokers (β -15.84; 95% CI, -"21.1 6" to -10.52). The results demonstrate that smoking marijuana, either alone or with cigarettes, increases lung function decline, and should be regarded as a risk factor for the progression of chronic obstructive pulmonary disease.

Dr Tan concluded, “Marijuana smoking imparts similar risks as tobacco smoking for the development of chronic airflow obstruction and the progressive decline in lung function,” as evident by an increased risk for chronic airflow limitation, a reduced transfer factor, and a faster decline in lung function over time.
Reference

Tan W, Bourbeau J, Maltais F, et al. Marijuana smoking in the middle-aged and elderly population is associated with rapid decline in FEV1. Presented at: American Thoracic Society 2018 International Conference; May 18-23, 2018; San Diego, California. Abstract 4450

www.pulmonologyadvisor.com/ats-2018/marijuana-smoking-elderly-middle-age-force-forced-expiratory-volume/article/767309/

[David]

We are not suppose to smoke anything. It's bad for COPD.

They do make a cannabis oil that is great medicine for COPD. No smoking. You put a tiny bit under your tongue and let it go to work.

[lavishgail]

They also have a tablet of cannabis to take which, ny sister is an advocate of marijuana and all that goes with it oil, creams, edibles, and many other ways besides smoking.

But, Im allergic to some of the ingredients of cannabis so I have to be very careful if I was to try it, my doctor wants me to try the edible stating that it will be better for me than anything. I couldn't believe my doctor even wanted me to try it wow, it's not something I'm really interested in to be honest. If it gets rid of all my pain and helps me sleep and makes me a better person then I'll think about it other than that I'm too afraid of having another anxiety attack on top of one after 1 because when I was a young I smoked pot and that's what it did for me

[gnott]

David said it. You shouldn't smoke anything if you have COPD.

That I would think, at least by now, everyone except those in a cave would know that and therefore why the "study". (Someone actually got money and facilities to spend their time on this. Well their students time, they likely were in Jamaica drinking Mai Tai's, dreaming up another superfluous proposal for money. Money that might actually be used for something useful.)

I really shook my head, BUT then I realized it was a presentation for a convention held in -> San Diego, CALIFORNIA!

And Californians actually wonder why the Real World considers them strange. Smile.

[David]

Gail, there is a Facebook page for cannabis and Lupus. Just put it in the search box on FB "Lupus and cannabis".

You might find some interesting reading in that forum.

[lavishgail]

Thank you David, I will look into IT.. I'm grateful for you!
😊✌🏼❤💜