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Mayo Clin Proc. 2011 Nov;86(11):1042-9. doi: 10.4065/mcp.2011.0267. Epub 2011 Sep 12.

A prospective study of fasting plasma glucose and risk of stroke in asymptomatic men.

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Department of Exercise Science, Arnold Schoolof Public Health, University of South Carolina, Columbia, USA.



To examine the association between levels of fasting plasma glucose (FPG) and incidence of stroke outcomes in a large cohort of asymptomatic men.


Participants were 43,933 men (mean ± SD age, 44.3 ± 9.9 years) who were free of known cardiovascular disease at baseline and whose FPG levels were assessed during a preventive medical examination at the Cooper Clinic, Dallas, TX, between January 7, 1971, and March 11, 2002. Patients with diagnosed diabetes mellitus (DM) or low FPG (<80 mg/dL [to convert to mmol/L, multiply by 0.0555]) were excluded. Fatal stroke was identified through the National Death Index, and nonfatal stroke was ascertained from mail-back surveys.


A total of 595 stroke events (156 fatal and 456 nonfatal strokes; 17 men reported a nonfatal stroke before they died of stroke) occurred during 702,928 person-years of exposure. Age-adjusted fatal, nonfatal, and total stroke event rates per 10,000 person-years for normal FPG (80-109 mg/dL), impaired fasting glucose (110-125 mg/dL), and undiagnosed DM (≥ 126 mg/dL) were 2.1, 3.4, and 4.0 (P(trend)=.002); 10.3, 11.8, and 18.0 (P(trend)=.008); and 8.2, 9.6, and 12.4 (P(trend)=.008), respectively. After further adjusting for potential confounders, the direct association between FPG and fatal, nonfatal, or total stroke events remained significant (P(trend)=.02, .03, and .01, respectively). For FPG levels of 110 mg/dL or greater, each 10-unit increment of FPG was associated with a 6% higher risk of total stroke events (P=.05).


Hyperglycemia (FPG, ≥ 110 mg/dL), even below the DM threshold (such as with impaired fasting glucose), was associated with a higher risk of fatal, nonfatal, or total stroke events in asymptomatic men.

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