“…Some previous studies had reported a correlation between BMD or osteoporosis and the risk of all-cause mortality and CVD mortality.Research by Cai S showed that total femur (HR = 1.36, 95% CI = 1.07-1.73), femur neck (HR = 1.41, 95% CI = 1.11-1.78), intertrochanter (HR = 1.34, 95% CI = 1.05-1.72), and entire body (HR = 1.36, 95% CI = 1.09-1.69) osteoporotic participants had a higher risk of all-cause mortality compared with normal participants.However,the statistically signi cant L-shaped relationships were only identi ed for heart disease mortality with BMD increment within certain limits in the femur, whereas the remarkable relationships disappeared after BMD continued to increase [14].Other ndings from nationally representative cohorts also suggested that osteoporosis was associated with an increased risk of all-cause mortality(HR = 1.37, 95% CI = 1.11, 1.68), and this association was stronger in participants who were older and had a lower BMI.Similarly, non-signi cant results were observed for osteoporosis with CVD mortality in their study, the non-signi cant results might be due to the lower number of incident CVD, and cancer deaths, and short-time follow-up [15].Other studies had drawn some positive conclusions on the relationship between osteoporosis and cardiovascular disease risk.Irene's study included a total of 305,072 UK Biobank participants diagnosed with osteoporosis at baseline, the study concluded that men with osteoporosis had a higher mortality risk from CVD(HR = 1.68,95%CI = 1.19-2.37).However, women with osteoporosis only had a higher risk of incident CVD(HR = 1.24,95%CI = 1.97-1.44),and the risk of CVD mortality was not affected [16].Calcaneal quantitative ultrasound (QUS) was utilized to assess bone material properties, particularly in elderly women, and could also be used to diagnose osteoporosis.In a prospective study of aged women, A. K. Gebre found that quantitative ultrasound measurements of the calcaneus were independently associated with increased cardiovascular and all-cause mortality, independent of established cardiovascular risk factors.Reduction in broadband ultrasound attenuation (BUA) in the minimally and multi-variable adjusted model including cardiovascular risk factors increased relative hazard for all-cause mortality (HR = 1.15,95%CI = 1.06-1.261) and CVD mortality (HR = 1.20,95%CI = 1.04-1.38).Nonetheless, this observational study was limited to geriatric females only, and the results were not founded on the analysis of BMD values [17].In a similar study called the AA-DHS, vertebral BMD(vBMD) was analyzed in 675 African American men with T2DM and the results suggested that lower vBMD was associated with increased all-cause mortality, but regrettably, this study also showed that lower vBMD was not linked to other mortality risk factors, including subclinical atherosclerosis [18].…”