THE REPORT by Lynch et al1 in this issue of the Archives indicates that maintained, moderately intense exercise is associated with a decreased incidence of diabetes mellitus in subsequent years in Finnish men. The study can be criticized on the grounds that the subjects were not randomly assigned to exercise or no exercise (ie, they may have constituted different populations before the study was started). However, I believe the conclusion of Lynch et al1 is likely to be correct. There are many reports that increased exercise in populations is associated with a lower prevalence of non—insulindependent diabetes mellitus and that physical exercise improves glucose tolerance in normal subjects, as well as in patients with diabetes mellitus.2
Can you get your patients in the United States to increase their level of physical activity substantially? I often do not succeed. Here are some favts that might be discussed with an
Nugent CA. Exercise Decreases the Risk of Development of Diabetes MellitusSo.... Arch Intern Med. 1996;156(12):1258. doi:10.1001/archinte.1996.00440110012003
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