Here's another anecdotal story: My wife was scheduled for surgery and I Googled Cannabis and Surgery and there were multiple references to blood thinning among other concerns. When we asked the anesthesiologist, primary care and surgeon whether she should abstain from vaping ... in each case we were told it would be a good idea to stop using cannabis a couple days before surgery but that the blood thinning isn't significant enough to be a concern. They were more concerned about things like aspirin and Ginkgo. So while there are many references to many possible things ... the severity of the affect may be the real truth teller.
I read through 3 different documents/studies. Probably the most comprehensive document was:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6893937/
In all studies, the consumption of cannabis has been through smoking. Only one study assessed the duration of cannabis use in months (Aldemir et al., 2017). Unfortunately "smoking" reduces the validation of the sources from the link above for me. My health and my wife's health significantly improved when we stopped smoking and vaped.
Summary: The available studies are somewhat inconclusive relative to ED and requires more study. Cannabis use has been documented as a plus for sex due to its increasing sexual desire and arousal. Some studies show that when THC reaches the brain, it gives users the feeling of being “high.” This interferes with your body’s normal functions. It may also impact the normal function of the penis’s smooth muscle, resulting in ED. Pick your poison? As of 2018 - The medical community has not found conclusive evidence that using cannabis, or marijuana, leads to ED.
Some details I carved out:
- If ED happens now and then, there’s often no need for concern. If it’s frequent, it may be a symptom of another health condition. In that case, treating the other condition may resolve ED.
- Pro: Cannabis reduces damage due to high cholesterol and increases sexual desire/arousal.
- Con: Some studies suggest its possible cannabis contributes to ED via the association with the penis' smooth muscle and may inhibit reaching orgasm. Cannabinoid receptors are present in the smooth muscle tissue of the penis. For this reason, it is theoretically possible for THC to impair penile function, and this may lead to ED.
However, evidence is lacking.
Taking sildenafil (Viagra) with marijuana may not be a smart move either. A 2006 paper published in Clinical Cardiology showed that marijuana prevents Viagra from being properly metabolized. This increases Viagra’s effects, which might mean an increased risk of heart problems.
According to NIDA Trusted Source, marijuana can cause a feeling of euphoria, then drowsiness and a slower reaction time.
This suggests getting high well before sex could actually reverse the initial sexual desire/arousal and make the user tired and less interested so maybe get high right before sex...how about during! I'm not kidding about "during". The person receiving oral sex could be vaping....
However, at least one study Trusted Source found no significant difference in risk for ED between a group that used cannabis and a control group.
2019 study - suggest that ED is twice as high in cannabis users compared to controls.
Future longitudinal research is needed to confirm/refute this and explore if a dose–response relationship between cannabis and ED may be evident.
Considering that the causes of ED may be psychological, organic or most commonly a mix of both, different hypotheses can explain this outcome. One of the possible mechanisms is attributed to the endocannabinoid system through the binding of receptors in the paraventricular nucleus of the hypothalamus which regulates erectile function and sexual behavior of males (Argiolas et al., 2005).
This mechanism could also explain why cannabis can improve sexual function in some patients affected by conditions or symptoms such as depression, anxiety disorder and pain (Gobbi et al., 2019; Huang et al., 2016). Growing evidence, both in animal and human studies, reported a peripheral effect of cannabis on ED, specifically on corpus cavernosum where cannabinoid receptors are present (Gratzke et al., 2010; Melis et al., 2006). Future longitudinal studies are necessary to confirm/refute this and explore the potential differing effects based on the type, potency and frequency of cannabis used.
In conclusion, considering the high prevalence of ED and cannabis use and the potential harmful effects of cannabis use on male sexual and general health, it is necessary to increase and improve the knowledge on this topic in order to achieve a general consensus on the best clinical and public health strategies.