Cannabis use linked to lower prostate cancer rates

A recent study published in the magazine Biomedicines found a significant association between cannabis use and a reduction in the prevalence of prostate cancer. Prostate cancer, which is currently the second most common cancer with 1.4 million new cases diagnosed worldwide each year, is expected to see that number double by 2040.

Despite its prevalence, effective preventive measures against prostate cancer remain difficult to implement. This study provides interesting insights into how cannabis use might influence the risk of developing this disease.

Study Methodology and Demographic Data

The research team, affiliated with the University of Connecticut School of Medicine and H. Lee Moffitt Cancer Center and Research Institute in Florida, used data from a large-scale national survey. They analyzed responses from 2,503 men over the age of 50; the cohort consisted primarily of nearly 90% non-Hispanic white men, all of whom had been diagnosed with prostate cancer at some point.

Participants were divided into three groups based on their cannabis use: current users, former users, and those who had never used cannabis. This categorization allowed researchers to make comparisons and identify potential correlations between cannabis use and the prevalence of prostate cancer.

Main results

The study found that current and former cannabis users had significantly lower rates of prostate cancer than those of people who have never used cannabis. More specifically, the group of former cannabis users had a significantly lower rate of self-reported prostate cancer.

«In this cross-sectional study of 2,503 participants from the United States using data from the NSDUH survey (2002–2020), we observed that individuals who were former marijuana users had a significantly lower rate of self-reported prostate cancer (PC),» states the study. Although current consumers also tend to report having prostate cancer less often, the statistical significance is less clear, likely due to the small sample size of this group.

The researchers observed consistent trends even when the data were divided into subgroups, which reinforces the strength of their conclusions. Among participants over the age of 65, past cannabis use was associated with a lower prevalence of self-reported prostate cancer compared to those who had never used cannabis. Similarly, among non-Hispanic whites, past cannabis use was associated with lower rates of prostate cancer.

Biological Mechanisms

The study’s authors emphasized the biological plausibility of their findings, drawing on existing research regarding the anticancer effects of cannabinoids. Visit cannabinoids have been proposed as regulators of cancer cell growth, differentiation, invasion, and metastasis through various mechanisms. These include the regulation of the mitogen-activated protein kinases (MAPK) ), which is involved in proliferation, differentiation, and’cell apoptosis, as well as the stimulation of the p8-regulated pathway, which induces autophagy and inhibits the VEGF pathway.

Preclinical studies have demonstrated the antitumor effects of cannabinoids on prostate cancer. For example, research by Roberto et al. reported that the WIN 55,212-2, a cannabinoid This synthetic compound inhibits the growth, proliferation, spread, and invasion of prostate cancer cells. Furthermore, it has been shown to induce cell cycle arrest and promote apoptosis in prostate cancer cell line models.

Implications and future research

The study highlights the need for further research to validate and build upon these findings. The authors note that this is the first study to examine the association between cannabis use and prostate cancer in a large cohort using a national survey focused on older men, a high-risk group for this disease.

«To our knowledge, this is the first study to examine the association between marijuana use and prostate cancer in a large cohort, using a national survey focused on the at-risk group of older men. Our results may help generate hypotheses for future prospective studies aimed at better evaluating »the role of cannabinoids (through the use of medical marijuana) in the prevention of prostate cancer," the researchers concluded.