Tag: Skin and sunlight

According to the National Institutes of Health, vitamin D is produced in the body when ultraviolet rays from sunlight strike the skin and trigger its synthesis. This fascinating biochemical process begins with a common substance found in human skin: cholesterol, specifically its derivative, 7-dehydrocholesterol.

Over 90% of the body's vitamin D is produced through sun exposure, which means the skin is the organ primarily responsible for kickstarting this vital process. Although this is where the journey begins, it's a multi-step process involving several organs to create the usable form of vitamin D.