Abstract
Objective. Although several studies have investigated the association between body mass index (BMI) and bone mineral density (BMD), the results are inconsistent. The aim of this study was to further investigate the relation between BMI, weight and BMD in an Iranian men population. Methods. A total of 230 men 50-79 years old were examined. All men underwent a standard BMD scans of hip (total hip, femoral neck, trochanter, and femoral shaft) and lumbar vertebrae (L2-L4) using a Dual-Energy X-ray Absorptiometry (DXA) scan and examination of body size. Participants were categorised in two BMI group: normal weight <25.0 kg/m2 and overweight and obese, BMI ≥ 25 kg/m2. Results. Compared to men with BMI ≥ 25, the age-adjusted odds ratio of osteopenia was 2.2 (95% CI 0.85, 5.93) and for osteoporosis was 4.4 (1.51, 12.87) for men with BMI < 25. It was noted that BMI and weight was associated with a high BMD, compatible with a diagnosis of osteoporosis. Conclusions. These data indicate that both BMI and weight are associated with BMD of hip and vertebrae and overweight and obesity decreased the risk for osteoporosis. The results of this study highlight the need for osteoporosis prevention strategies in elderly men as well as postmenopausal women.
Highlights
Obesity and osteoporosis are two important and growing public health problems worldwide [1–3], and osteoporotic fractures are among the main concerns of elderly population
Our study contributes to this issue by examining the relationship between body mass index (BMI), weight, and bone mineral density (BMD), among men referred for dual-energy X-ray absorptiometry (DXA) scan in Isfahan, Iran
Weight is an important predictor of BMD and bone mineral content (BMC) variation in elderly Iranian men. Both BMI and weight were associated with BMD, and obesity significantly decreased the risk for osteoporosis in men
Summary
Obesity and osteoporosis are two important and growing public health problems worldwide [1–3], and osteoporotic fractures are among the main concerns of elderly population. Low bone mineral density (BMD) is a major risk factor for osteoporosis and its related fractures [3]. Body weight or BMI has been found to be inversely related to the risk of osteoporotic fracture [3, 7]. The role of obesity as a risk factor for low BMD, osteoporosis, and its related fractures remains unsettled. While there have been abundant epidemiological studies in postmenopausal women, few studies have examined the relationship between BMI, weight, and BMD in men and no study has been undertaken in Iranian men. From clinical and public health point of view, it is important to clarify the role of BMI and weight in association with BMD. Our study contributes to this issue by examining the relationship between BMI, weight, and BMD, among men referred for dual-energy X-ray absorptiometry (DXA) scan in Isfahan, Iran. Our hypothesis is that BMI and weight contribute to the etiology of low BMD
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