Urban Tropospheric Ozone Increases the Prevalence of Vitamin D Deficiency among Belgian Postmenopausal Women with Outdoor Activities during Summer.

Context: By absorbing sunlight UVB and thereby reducing cutaneous vitamin D photosynthesis, ozone, a common urban pollutant, could cause hypovitaminosis D. Objectives: To establish the characteristics and percentage of subjects with serum 25-hydroxyvitamin-D (25(OH)D)<75 nmol/L among postmenopausal women engaging in outdoor activities either in Brussels or in the countryside. Design/Setting: Cross-sectional study conducted in a university research hospital. Patients/Methods: Among 249 women consulting for either shoulder tendonitis or lumbar spine osteoarthritis, 121 free of conditions and... Mehr ...