Concerns Surrounding Cannabis Use and Male Fertility
As the government considers easing restrictions on drugs, particularly for state-approved medical marijuana, discussions are growing about the effects of cannabis on health, especially male fertility.
Experts are raising concerns during National Infertility Awareness Week about how both recreational and medical cannabis might impact men’s reproductive health. Dr. Alta DeRoo, chief medical officer at the Hazelden Betty Ford Foundation, highlights the pain of couples trying to conceive when faced with potential barriers related to cannabis use.
The Impact on Male Fertility
Research shows that cannabis can affect reproductive health in both men and women, but the evidence is often mixed. A 2025 study associated cannabis use with higher miscarriage rates in women undergoing fertility treatments. It’s essential to recognize that fertility challenges don’t only stem from female issues; in fact, male infertility is a significant factor that often goes unrecognized. According to Dr. Stephanie Seminar of Massachusetts General Hospital, around 45% of infertility cases in couples are linked to male factors.
The Statistics
Globally, infertility affects approximately 10% to 15% of couples. Notably, a significant portion of these cases involves male infertility, which is frequently overlooked.
Effects of Cannabis
Dr. Seminar warns that heavy and prolonged cannabis use can lead to decreased sperm quality, including lower counts and mobility. A study published in The Journal of Urology found a connection between regular cannabis use, particularly smoking, and poorer semen quality. Another study focused on young Danish men revealed that smoking cannabis more than once a week resulted in a 28% decline in sperm concentration.
When combined with other drugs, the negative effects seem to worsen significantly, with reductions in sperm concentration and count reaching up to 55%.
Hormonal Changes
Cannabis can disrupt the body’s natural balance of reproductive hormones. THC, a primary component of cannabis, interacts with the body’s endocannabinoid system. This interference may impact hormone levels crucial for sperm production, which could further complicate fertility issues. While much is still being studied, some evidence suggests that cannabis use may lead to lower levels of hormones that support sperm production in the testes.
Moving Forward
Experts advise men who are planning to conceive to stop using cannabis, as doing so can enhance sperm quality. It is suggested that individuals discontinue use at least three months before attempting to conceive, allowing time for the body to regenerate healthy sperm.
Dr. DeRoo emphasizes that quitting cannabis can also improve various health aspects and serve as a strong motivation for those aiming to start a family.
Current Cannabis Use Trends
Nearly one in five Americans used cannabis in 2021, according to CDC data. While recreational use is legal in about half of the states, medical marijuana is permitted in over 30 states. Statistics indicate that around 30% of cannabis users may develop a substance use disorder, impacting their everyday lives.
As this topic continues to unfold, understanding the relationship between cannabis use and male fertility remains crucial for couples trying to conceive.
