(HealthDay)—Individuals who develop diabetes or prediabetes have elevated fasting plasma glucose (FPG) at least 10 years before diagnosis, according to an observational study recently published in the Journal of the Endocrine Society.
Hiroyuki Sagesaka, M.D., from Aizawa Hospital in Matsumoto, Japan, and colleagues analyzed data from 27,392 health examinees without diabetes for a mean of 5.3 years. Ten years before diagnosis of prediabetes (4,781 participants) or diabetes (1,061 participants), trajectories of FPG, body mass index (BMI), and the single point insulin sensitivity estimator (SPISE), an index of insulin sensitivity, were assessed.
The researchers found that 10 years before diagnosis, mean FPG and BMI were significantly higher in individuals who developed diabetes (FPG, 101.5 versus 94.5 mg/dL; BMI, 24.0 versus 22.7 kg/m²), while SPISE was lower than among those who did not develop diabetes (SPISE, 7.32 versus 8.34; all P < 0.01). At 10 years before diagnosis, these measurements were slightly but significantly different in participants who developed prediabetes versus those who did not develop prediabetes (FPG, 91.8 versus 89.6 mg/dL; BMI, 22.6 versus 22.1 kg/m²; SPISE, 8.44 versus 8.82; all P < 0.01). Toward the time of diabetes or prediabetes diagnosis, the differences were progressively greater.
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