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Related Experiment Videos

Clinically prescribed sunscreen (sun protection factor 15) does not decrease serum vitamin D concentration

J Farrerons1, M Barnadas, J Rodríguez

  • 1Mineral Metabolism Unit, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Sant Antoni Ma Claret, 167 Barcelona 08025, Spain.

The British Journal of Dermatology
|October 10, 1998
PubMed
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This summary is machine-generated.

Sunscreens may slightly lower vitamin D levels, but this study found no significant impact on bone health markers or parathormone in users. Sunscreen use did not lead to adverse bone health changes.

Area of Science:

  • Dermatology
  • Endocrinology
  • Nutritional Science

Background:

  • Sunscreen use is recommended for skin cancer prevention.
  • Concerns exist regarding potential vitamin D deficiency due to sunscreen use.

Purpose of the Study:

  • To investigate the effect of sunscreen use on vitamin D levels and bone metabolism markers.
  • To determine if sunscreen use leads to secondary hyperparathyroidism or bone density changes.

Main Methods:

  • A 2-year longitudinal study comparing 24 sunscreen users and 19 controls.
  • Seasonal measurements of 25-hydroxyvitamin D, parathormone, and bone biological markers.
  • Evaluation included basal, summer, and winter periods.

Main Results:

Related Experiment Videos

  • Mean 25-hydroxyvitamin D levels increased in summer and decreased in winter for both groups.
  • Sunscreen users showed significantly lower winter 25-hydroxyvitamin D levels compared to controls.
  • No significant changes were observed in parathormone or various bone biological markers.

Conclusions:

  • Clinically prescribed sunscreen (SPF 15) caused a minor decrease in 25-hydroxyvitamin D.
  • This minor decrease did not result in secondary hyperparathyroidism or altered bone markers.
  • Sunscreen use, at SPF 15, appears safe regarding vitamin D-related bone health.