Vitamin D levels in postmenopausal women with low bone mineral density

Background: Low vitamin D levels are a risk factor for osteoporosis. In the Northern Hemisphere, a high frequency of low vitamin D levels has been det ected. The correction of this deficit is associated with a lower fracture r isk. Aim: To measure serum vitamin D levels in postmenopausal women with lo w bone mineral density. Material and methods: 25-hydroxyvitamin D levels we re measured in 40 postmenopausal women aged 50 to 74 years old, with a spin e bone mineral density of less than 2 standard deviation of the values for young individuals. Serum calcium, phosphorus and calcium dietary intake wer e also measured. Results: Mean serum 25-hydroxyvitamin D levels were 32.2 /- 12.5 ng/ml. No correlation between vitamin D levels and other measured v ariables was observed. Using a cutoff value of 15ng/ml, two women had low 2 5-hydroxyvitamin D levels. Conclusion: In this sample of postmenopausal wom en, vitamin D defiency was infrequent.