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Effect Of Nutrition Education And Sun Exposure On Vitamin D Status Among Postmenopausal Malay Women

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2012

Key Words:

Author NameFaculty of Author
Abstract (2. Language): 
A total of 169 subjects aged 49 to 74 years were recruited from rural community in the region of Sepang. They were randomized into four groups: control (CG, n = 42), nutrition education (NEG, n = 42), sun exposure (SEG, n = 42) and lastly nutrition education with sun exposure (NESEG, n = 43). Serum 25(OH)D was measured using an enzyme-linked immunosorbent (ELISA Kit) and parathyroid hormone (PTH) was measured using immunoradiometric assay (IRMA). Vitamin D intake was assessed using three-day food records. A questionnaire was used to assess knowledge, attitude and practice among the subjects. Measurements were made at baseline, 4 months and 12 months. The mean of vitamin D intake for all groups at baseline were lower (CG = 2.6 ± 1.8 μg; NEG = 2.9 ± 1.7 μg; SEG = 2.8 ± 1.9 μg and NESEG = 3.4 ± 2.5 μg) than the recommended nutrient intakes (RNI) for Malaysia (10 μg). Serum 25(OH)D for all groups were in the range of 50 – 100 nmol/l (defined as hypovitaminosis D). Serum 25(OH)D was found to significantly correlate with BMI, fat mass, serum PTH, knowledge and practice scores. After intervention, knowledge and practice scores of NEG and NESEG increased compare with baseline and higher than CG and SEG. The nutrition education had an additional benefit of increasing the knowledge and practice scores. However, after intervention, vitamin D intake and serum 25(OH)D levels decreased for all the groups. It indicated that to increase of serum 25(OH)D levels for postmenopausal Malay women could be conducted through vitamin D supplementation, as well as through nutrition education and sun exposure.
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  • 10
91-97
  • English

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