Here is a list of studies regarding sunlight, vitamin D, and non-melanoma skin cancer:

Protective Role of Vitamin D Signaling in Skin Cancer Formation (2013)

Conclusion: Proper vitamin D receptor function protects against tumor formation and allows for DNA repair.

Vitamin D Receptor, UVR, and Skin Cancer: A Potential Protective Mechanism (2008)

Conclusion: Although UVB exposure can cause non-melanoma skin cancer, it’s also the same UV spectrum necessary for the epidermal vitamin D synthesis that prevents other cancers.

Also see:

Vitamin D, Sunlight, and Cancer

Melanoma

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