For comparison, alcohol is well known to have a dramatic impact on both sperm and testosterone production once you exceed a fairly modest threshold (5 drinks/week):<p><a href="https://pathfertility.com/how-does-alcohol-affect-male-fertility/" rel="nofollow">https://pathfertility.com/how-does-alcohol-affect-male-ferti...</a>
The important bit:<p>> Current research suggests that cannabis may negatively impact male fertility. Further studies are needed to validate that robust findings in animal models will carry over into human experience.<p>My takeaway: if you are having trouble reproducing, and/or your doctor finds some anomalies in a full fertility workup, you may want to talk about your marijuana use with them. That's about it.
Yeah, when we wanted to have a kid I quit cannabis and hot-tubbing for 6 months in anticipation of conceiving. It worked, and she's healthy! Sample size of 1, but it felt like kind of a nice way to commit to a family and get in the proper head space anyways.
Tangential addendum: I used to smoke pot <i>all the time</i>. From my mid-teens to mid-twenties. At least once a day, increasing over time to 3-5-∞ times a day. In the last year, I have significantly reduced my marijuana usage to less than once a week. My mental health has benefitted tremendously (also thanks to a great therapist!). I sleep better, I eat less shitty food, I enjoy sex more, I feel overall more equipped to handle my daily life and be an adult. I only date people of the same sex, so standard reproduction isn't a big concern for me; but if you're a pothead like I was (am?)--there's a lot more to reflect on than your sperm count. :)
> Animal models demonstrate a role for cannabis in … reduced libido and sexual function but to our knowledge these results have not yet been replicated in human studies.<p>Um.
A systematic review that came out with 'may' do something and never addressed the elephant in the room?<p>That's very weak in my books. Cannabis is an aphrodisiac. If they found a small effect, it's something else.<p>What is that something else?:<p><a href="https://www.niehs.nih.gov/health/topics/agents/endocrine/index.cfm" rel="nofollow">https://www.niehs.nih.gov/health/topics/agents/endocrine/ind...</a><p>Every single one of those is in your drinking water, most of them are in your food. It's even worse if you live coastal on salt water where they recycle water often. No government attempts to remove these. This is the reason you need water filtration or pay for the giant water bottles. Also the reason why many countries don't even bother trying to make clean water. Dont drink the water in Mexico etcetc.
> We performed a literature search using PubMed®/MEDLINE® to identify relevant studies of the effects of cannabis on male fertility. Relevant studies were identified and reviewed.<p>Why is this presented as new research?
I'm not saying that their data isn't accurate, but it is strange that there's a 1:1 relationship between what the government wants to clamp down on and what will make your sperm die, make your testicles shrink, or make your penis flaccid.