Abstract
To study taste in type I (insulin-dependent) diabetes mellitus, 57 consecutive diabetic outpatients (mean +/- SE duration of diabetes 11.4 +/- 0.4 yr) and 38 control subjects were screened for taste disorders with electrogustometry and chemical gustometry. Both groups were comparable for all subject characteristics except body mass index, which was higher in the diabetic group (P less than .05). A taste impairment was found in the diabetic group relative to the control group with electrogustometry (mean threshold 184.3 +/- 15.8 vs. 58.7 +/- 9.2 microA; P less than .001) and chemical gustometry (mean score 13.2 +/- 0.7 vs. 17.1 +/- 0.8; P less than .001). Hypogeusia was found among 73% of the diabetic patients versus 16% of the control subjects (P less than .001). The four primary tastes were involved in taste impairment. With multivariate analysis, taste disorders were related to diabetic status and tobacco and alcohol consumption. In the diabetic group, taste impairment was significantly associated with complications and duration of disease. With multivariate analysis, peripheral neuropathy had the strongest association with taste disorders. These results suggest that taste is impaired during the course of type I diabetes mellitus and that taste impairment could be a complication of the disease. A mechanism of the neuropathic type could be involved.
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