According to research published online April 18, 2012, in the British Journal of Dermatology, using the amount and sun protection factor (SPF) of sunscreen recommended by the World Health Organization (WHO) is associated with little or no vitamin D production, suggesting that regular sunscreen use may lead to vitamin D deficiency.
The study demonstrated that the vitamin D serum level in the blood of the test subjects increased in an exponential manner with decreasing the thickness of sunscreen layered on their skin in response to UVB exposure. According to the researchers, “the results suggest that sunscreen use according to the current recommendations by the WHO may be re-evaluated.”¹
The use of sunscreen with a sun protection factor (SPF) of just 8 inhibits more than 95% of vitamin D production in the skin.²
Recent studies showed that following the successful “Slip-Slop-Slap” health campaign encouraging Australians to cover up when exposed to sunlight to prevent skin cancer, an increased number of Australians and New Zealanders became vitamin D deficient.²
The argument for safe sun exposure to facilitate natural vitamin D production is a growing one. SkinHealth Technology has developed a patented, new sensor that helps enable the user to get sun for vitamin D optimization without damage to the skin.