Abstract
Effects of lifestyle on bone metabolism were investigated in 5 1 middle-aged and aged women. We measured lumbar spine bone mineral density (BMD) at the baseline and at the end of I -year period using dual energy X-ray absorptiometry (DEXA). Then we collected additional information from questionnaires and investigated lifestyle. We also evaluated the incidence of 'low BMD' based on the diagnostic criteria for osteoporosis and slow bone losers based on the change of BMD. Many subjects had never drunk milk habitually and never exercised regularly. However, many have drunk milk habitually and exercised regularly. Many subjects have taken exercise of table tennis, tennis or swimming etc more than 2 hours a week and about 3 times a week They were highly aware of their diet and physical activity. Their BMD level was high compared with the standard BMD for healthy Japanese woman. They were a few ' Low BMD' and many slow bone losers. Based on these results, Even if they had never drunk milk habitually and exercised regularly, habitual milk intake and regular physical exercise will be able to prevent decline of BMD. High dietary and exercise awareness appear to be important for preventing osteoporosis.
