Prevalence of osteoporosis in men and determinants of changes in bone mass in a non-selected Spanish population
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Osteoporotic studies conducted exclusively in men have been limited by the discrepancies in defining densitometric osteoporosis and, also, because osteoporosis has traditionally been associated only with women. The aims of this study were to describe the prevalence of low bone mineral density (BMD) and osteoporotic fractures as well as the rate of bone loss. The analysis of some risk factors for accelerated bone loss was also evaluated. Men aged 50 years and over, randomly selected from the Oviedo municipal register (n=308), completed a questionnaire regarding risk factors related to osteoporosis; they underwent two lateral radiographs of the dorsal and lumbar spine and a dual X-ray absorptiometry (DXA) study at the lumbar spine and hip. In the 4th year of the follow-up period, participants were invited to undergo repeats of the same tests that had been carried out in the initial study. The prevalence of densitometric osteoporosis in men older than 50 years, standardized by age, was 8.1% with regard to at least one of the four studied bone areas, with a slight increase with age. The prevalence of osteoporotic fracture, standardized by age, was 24.4%, with a marked increase with age. Osteoporotic prevalent fracture was independently associated only with the rate of change in lumbar spine BMD. From all the osteoporotic risk factors analyzed, only low milk consumption and regular smoking were independently associated with loss of bone mass. In summary, prevalent osteoporotic fracture was independently associated with the rate of change in the lumbar spine BMD but not in the other segments studied. Avoiding smoking and ensuring an adequate milk intake might prevent the loss of bone mass in men.
KeywordsBone mass determinants Men Osteoporosis Prevalence
This study was partially supported by the European Vertebral Osteoporosis Study (EVOS), European Community (1.991–1.993); the European Prospective Osteoporosis Study (EPOS), European Community BIOMED 93–95. BMHI—CT 092–0182. (1.993 −1.997); Fondo de Investigaciones Sanitarias (FIS 94/1901-E) and by Fundación Renal Iñigo Álvarez de Toledo (Spain). Language consultant was Francesca Pieraccini.
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