For women at high risk of melanoma, taking a combination of calcium and vitamin D may significantly reduce chances of developing the disease. That's the finding from a recent study from the Journal of Clinical Oncology, which included more than 36,000 women ages 50 to 79.
Looking at data from a previous clinical trial involving 36,282 adult females, researchers found that those who had a history of non-melanoma skin cancer and took supplements containing calcium and vitamin D for seven years developed 57 percent fewer melanomas (compared to women with similar skin-cancer histories who did not take calcium and vitamin D during the seven-year period). However, the supplements did not appear to reduce melanoma risk among women without a history of non-melanoma skin cancer.
Although it's not known how calcium and vitamin D might protect against melanoma, the study's authors note that vitamin D controls how rapidly skin cells replicate.
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