Sources:
Harvard TH Chan - https://www.hsph.harvard.edu/nutritionsource/vitamin-d/ (9/6/2017)
Vitamin Council - https://www.vitamindcouncil.org/about-vitamin-d/how-do-i-get-the-vitamin-d-my-body-needs/ (9/6/2017)
Cancer Research UK - http://www.cancerresearchuk.org/about-cancer/causes-of-cancer/sun-uv-and-cancer/how-the-sun-and-uv-cause-cancer (9/6/2017)
America Sociaty For Dermatologic Surgery - https://www.asds.net/10-Skin-Cancer-Myths-Debunked/ (9/6/2017)
Examine.com - https://examine.com/supplements/vitamin-d/ (9/6/2017)
Mediline Plus - https://medlineplus.gov/magazine/issues/winter11/articles/winter11pg12.html (9/6/2017)
Mercola Com - http://articles.mercola.com/sites/articles/archive/2016/04/04/sun-exposure-benefits-risks.aspx (9/6/2017)
Science Daily - https://www.sciencedaily.com/releases/2017/03/170308083938.htm (10/6/2017)