Key points are not available for this paper at this time.
BACKGROUND: Sunlight contains ultraviolet (UV)A and UVB radiation. UVB is essential for vitamin D synthesis but is the main cause of sunburn and skin cancer. Sunscreen use is advocated to reduce the sun's adverse effects but may compromise vitamin D status. OBJECTIVES: To assess the ability of two intervention sunscreens to inhibit vitamin D synthesis during a week-long sun holiday. METHODS: ] was assessed by high-performance liquid chromatography-tandem mass spectrometry. RESULTS: . CONCLUSIONS: concentration. An SPF 15 formulation with high UVA protection enables better vitamin D synthesis than a low UVA protection product. The former allows more UVB transmission.
Young et al. (Thu,) studied this question.