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Obesity and physical inactivity are the major risk factors in Type 2
diabetes. A randomized controlled trial was started in
1986 in DaQing, China to examine the effects of changing
diet and physical activity on the development of Type 2
diabetes. 110,660 subjects were screened and IGT subjects
were identified. They were randomized to four groups. The
first group was given general health advice only. The
second group was given specific advice on how to change
their diet. They were instructed to decrease intake of
fat and calories if obese. The third group was advised to
increase in physical activity on a daily basis. The
fourth group was given advice on both. All four groups
were followed for 6 years.
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