Investigation of bone density and peak bone density of healthy adult residents with normal body mass index in Shenzhen

    WU Fuª²Na, ZHONG Ziª²Ru, HAN Quanª²Shui, LIN Xiaoª²Lan

    1Department of Geriatrics, 2Department of Healthy Examination, Second Affiliated Hospital of Jinan Medical College, Shenzhen People¬ðs Hospital, Shenzhen 518020,

    ¡¾Abstract¡¿ AIM: To investigate the bone density and peak bone density (PBD) in healthy residents with normal body mass index in Shenzhen City for the prevention of osteoporosis in Shenzhen. METHODS: Bone mineral density of 677 healthy residents, who were aged over 20 and has lived in Shenzhen for more than 10 years, was measured by dual-energy X-ray absorption-metry (DEXA). The subjects were divided into 14 age groups with five years in each group. RESULTS: The PBD of lumbar vertebral and femoral neck and ward¬ðs triangle was observed in 25-29 male group and in 35-39 female group and the PBD of neck and ward¬ðs triangle was observed in female 40-44 group. The highest bone mass density was found in 80-84 male group. The bone mass density dropped rapidly from 45 years on in females. CONCLUSION: Female PBD appears later than male PBD, just before menopause. The PBD in female is drops rapidly from 45 years on, while that in males drops from the age of 65 or 70. Prevention of osteoporosis should starts with the elevation of PBD in adolescents. ......