13 doctors weighed in:
What happens to teenage boys who smoke weed when they grow up?
13 doctors weighed in

Dr. Keegan Duchicela
Family Medicine
8 doctors agree
In brief: Lots of visine.
Take all the bad things that can happen when you smoke tobacco, then add in some memory impairment, difficulty focusing, and the thing that probably scares teenage boys the most: erectile dysfunction.
I've seen guys in their 30's start to have ED and other problems like retrograde ejaculation because of their marijuana use. Then there's fertility issues too... Try to avoid it!

In brief: Lots of visine.
Take all the bad things that can happen when you smoke tobacco, then add in some memory impairment, difficulty focusing, and the thing that probably scares teenage boys the most: erectile dysfunction.
I've seen guys in their 30's start to have ED and other problems like retrograde ejaculation because of their marijuana use. Then there's fertility issues too... Try to avoid it!
Dr. Keegan Duchicela
Dr. Keegan Duchicela
Thank
3 comments
Dr. James Eitner
In studies, MJ can also depress hormones (testosterone, prolactin, thyroid, and growth hormones). It inhibits immune functions against viruses and cancer. It may cause chromosomal damage, leading to birth defects. In excess, it may induce paranoia, mania, and panic reactions. Like tobacco, it can affect lung function. Using MJ during development may accentuate some of the effects.
Dr. James Eitner
Best advice for teens wanting to use MJ, is to use in moderation and after age 25, when growth and development has finished. (End of adolescence) (Same advice for any drug, street drug, tobacco, or alcohol.) BTW, exercise has been shown to release endogenous cannabinoids, thus creating the same pleasurable physical and psychological effects that we seek from MJ use.
Dr. James Eitner
Family Medicine
3 doctors agree
In brief: Varies
In studies, mj can also depress hormones (testosterone, prolactin, thyroid, and growth hormones).
It inhibits immune functions against viruses and cancer. It may cause chromosomal damage, leading to birth defects. In excess, it may induce paranoia, mania, and panic reactions. Like tobacco, it can affect lung function. Using mj during development may accentuate some of the effects.

In brief: Varies
In studies, mj can also depress hormones (testosterone, prolactin, thyroid, and growth hormones).
It inhibits immune functions against viruses and cancer. It may cause chromosomal damage, leading to birth defects. In excess, it may induce paranoia, mania, and panic reactions. Like tobacco, it can affect lung function. Using mj during development may accentuate some of the effects.
Dr. James Eitner
Dr. James Eitner
Thank
1 comment
Dr. James Eitner
Best advice for teens wanting to use MJ, is to use in moderation and after age 25, when growth and development has finished. (End of adolescence) (Same advice for any drug, street drug, tobacco, or alcohol.) BTW, exercise has been shown to release endogenous cannabinoids, thus creating the same pleasurable physical and psychological effects that we seek from MJ use.
Read more answers from doctors