I've heard from many people that physical exercise controls or prevents diabetes. Is there any studies that confirm or deny this?
Does physical exercise control diabetes?
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Yes, physical activity both prevents and treats Type 2 diabetes.
Eriksson, K.; Lindgärde, F.
Prevention of Type 2 (non-insulin-dependent) diabetes mellitus by diet and physical exercise The 6-year Malmö feasibility study
Diabetologia Volume: 34; Issue: 12; 1991-12-01
We conclude that long-term intervention in the form of diet and physical exercise is feasible even on a large scale, and that substantial metabolic improvement can be achieved which may contribute to prevent or postpone manifest diabetes.
Helmrich, Susan P.; Ragland, David R.; Leung, Rita W.; Paffenbarger, Ralph S.
Physical Activity and Reduced Occurrence of Non-Insulin-Dependent Diabetes Mellitus
New England Journal of Medicine; 1991/07/18
Increased physical activity is effective in preventing NIDDM, and the protective benefit is especially pronounced in persons at the highest risk for the disease.
Ronald J. Sigal; Glen P. Kenny; David H. Wasserman; Carmen Castaneda-Sceppa; Russell D. White
Physical Activity/Exercise and Type 2 Diabetes A consensus statement from the American Diabetes Association
Diabetes Care June 2006 vol. 29 no. 6 1433-1438
Therefore, there is firm and consistent evidence that programs of increased physical activity and modest weight loss reduce the incidence of type 2 diabetes in individuals with [impaired glucose tolerance].
Therefore, structured exercise programs had a statistically and clinically significant beneficial effect on glycemic control, and this effect was not primarily mediated by weight loss.
Yes it does
Here are a few sources :-)
long-term intervention in the form of diet and physical exercise is feasible even on a large scale, and that substantial metabolic improvement can be achieved which may contribute to prevent or postpone manifest diabetes.
The Center for Disease Control also confirms that exercise is related to diabetes:
What are the risk factors which increase the likelihood of developing diabetes?