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Regular Sunscreen Can Cause Vitamin D Deficiency

In case you didn’t know, regular sunscreen can lead to vitamin D deficiency in your body. This has been revealed by a study conducted at the Bispebjerg Hospital in Copenhagen, Denmark.

As many as 37 healthy volunteers with fair skin participated in this study, and the research team measured the serum vitamin D (25-hydroxyvitamin D3) levels of these volunteers before and after exposure to ultraviolet B (UVB) radiation following sunscreen application.

Sunscreen with a Sun Protection factor (SPF-8) was applied on the 25% of body area at a thickness of 0, 0.5, 1, 1.5, or 2 mg/cm². After 20 minutes of sunscreen application, a fixed exposure of UVB radiation was given to their body.

The same procedure was repeated for every two to three days and after 4 cycles, and the researchers came up with a conclusion that in thinner sunscreen layers Vitamin D serum levels were high after UVB exposure.

However, it was also found that vitamin D levels were not up significantly after UVB exposure in those treated with the thickest layer of sunscreen (2 mg/cm²). Incidentally, this level has been recommended by the WHO earlier.

The findings suggest that current sunscreen level recommendations by the WHO (World Health Organization) need to be re-evaluated. What do you think?

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