A Change by Aging or Sex Viewed from the Mean Values of Blood Test and Body Mass Index in Each Generation or Gender in Japan

  • Ryozo Hashimoto
    Department of Integrated Medicine, Kariya Toyota GeneralHospital Takahama Branch
  • Makoto Yasuda
    Department of Laboratory, Kariya Toyota General Hospital Takahama Branch

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Background Age, sex and regional variations have been generally believed to affect the data of annual health screenings. In this study, the key aim was to investigate the general tendencies in age- and sexrelated differences in BMI and blood test values in Japan.<br>Methods This study was performed on 10,783 females and 12,386 males, who were ambulant and visited our medical check-up center in 2009. The ages of the subjects selected for this study ranged from 20 to 85 years for females and 20 to 92 years for males. Five-year groupings were used for distributions of measured variables for both sexes but only one group was used for subjects of 20-29 years and those over 70 due to lower numbers of subjects. BMI and blood test means are presented for each variable by age and gender.<br>Results In the middle-aged men group, the numbers of subjects who were obese and overweight (BMI≧25) and obese (BMI≧30) were greater than in other male age groups and female age groups. In women, however, BMI, TG, total cholesterol (TC) and ALP levels started to increase after 50 years old because of menopause and therefore, the proportion of obese (BMI≧30) subjects was apparently lower than that in the middle-aged group.<br>Conclusion It should be emphasized that middle-aged men require interventions for preventing obesity and that care should be taken in initiating treatment for obesity in postmenopausal women. (Ningen Dock 2011; 25: 45-51)

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