Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
Print ISSN : 0300-9173
Prevalence of Glucose Intolerance in Japan
From the National Circulatory Disorders Basic Survey, 1990
Masahiro NakanoShigeyuki SaitohSatoru TakagiJyunichi FujisawaShinya AoyamaHiroshi TakahashiYoshito HayashiFumio ObaraKazuaki Shimamoto
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1998 Volume 35 Issue 11 Pages 839-844

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Abstract

The prevalence of glucose intolerance was surveyed in 8, 063 people over 30 years old from the general population of Japan. The data used in the analysis were from the Fourth National Circulatory Disorders Basic Survey, which was conducted in 1990.
Survey items included history of diabetes mellitus, body mass index (BMI) and daily life activity. Blood and urine were also examined, and the blood glucose levels, presence or absence of sugar in urine, and levels of glycohemoglobin (HbA1c) were determined. Glucose intolerance was identified from the blood glucose level, HbA1c level and history of diabetes mellitus.
The frequency of glucose intolerance was 8.6% in all subjects (11.9% in men and 6.3% in women). The frequency was higher in older people: 1.7 times higher in men over 65 years old and 2.5 times higher in women over 65 years old. Among people over 40 years old, glucose intolerance was significantly more prevalent in men than in women. It was also significantly more prevalent in men living in big cities than in men living in rural areas. Among obese male subjects and men with a low level of activity in daily life, the frequency of glucose intolerance was higher than in normal male subjects. The level of activity in daily life tended to be lower for people living in big cities than for those in rural areas. The results suggest that the prevalence of glucose intolerance depends on the environment in which people live. The results also indicate that raising the level of activities in daily life might help prevent diabetes mellitus.

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