INFLUENCE OF SUN EXPOSURE AND DIET TO THE NUTRITIONAL STATUS OF VITAMIN D IN ADOLESCENT SPANISH WOMEN: THE FIVE COUNTRIES STUDY (OPTIFORD PROJECT)

作者：Rodriguez Sangrador M; Beltran de Miguel B; Vives C Cuadrado; Moreiras Tuny O

来源：Nutricion Hospitalaria, 2010, 25(5): 755-762.

DOI：10.3305/nh.2010.25.5.4636

• Vitamin D
• Sun exposure
• Adolescent women
• Diet
• Spain

Introduction: Vitamin D defficiency is a big public health concern, especially among women. For this reason, "The Five Countries Study" was set up whithin the OPTIFORD project.
This study aims at knowing the vitamin D status in adolescent and older women in five European countries according to their different dietary and behavioral habits.
Objectives: To analyze the relative contribution of sun exposure and the diet to the vitamin D status among 47 Spanish adolescents participating in "The Five Countries Study". Methods: Validated and standardized questionnaires (health, lifestyle, sun exposure, and frequency of food consumption), biochemical analysis (25-hydroxyvitamin D (S-25-OHD) and parathormone), and assessment of sun exposure (UV dosimeter).
Results: Serum levels of S-25-OHD were higher durign the summertime than in winter (61.55 +/- 12.85 nmol/l and 45.81 +/- 9.29 nmol/l, respectively). Fourtyfive percent of the sample had a worsening of their vitamin status in the winter, as compared with the summer (p < 0.0001). During the summer, vitamin D insufficiency (S-25-OHD <= 50 nmol/l) affected 17% of the population, going up to 63% in the winter. Sixtysix percent of the sample did not reach the IR of vitamin D (5 g/day), being the fish the main dietary source of vitamin D.
Conclusions: Only 34% of the participants had an adequate vitamin D status. Both adequate sun exposure and vitamin D dietary intake are recommended in order to correct defficient and insufficient situations.

• 出版日期2010-10