they were also divided into three other groups based on how often they consumed oral vitamin d supplements: non-users, occasional users and regular users. an analysis of the serum calcidiol levels in half of the study’s subjects was found to align with self-reported use of the supplement.
researchers found that there were considerably fewer cases of melanoma in the group that regularly consumed vitamin d compared to non-users, and that regular users were more likely to be classified into a group that was deemed less at risk for the disease. using logistical regression analysis, the team found that subjects that regularly consumed vitamin d had their risk of melanoma more than cut in half compared to non-users.
although the study was cross-sectional and the team was unable to prove a causal relationship, the results suggest that consuming using even low levels of vitamin d may decrease the risk of melanoma relative to non-users. they found no statistically significant relationship between vitamin d supplements and basal cell carcinoma or squamous cell carcinoma.
according to researchers, the findings align with recent studies that have shown the benefits of vitamin d in relation to melanoma, including one that concluded using the supplement was associated with less aggressive versions of the skin cancer.
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