Dietary fiber and C-reactive protein: findings from national health and nutrition examination survey data.
A higher intake of dietary fiber may decrease the risk of developing cardiovascular disease. We examined the association between dietary fiber and serum concentration of C-reactive protein (CRP), a possible predictor of cardiovascular events, using data from the National Health and Nutrition Examination Survey 1999-2000. Among 3920 participants > or = 20 y old, dietary fiber intake was inversely associated with serum CRP concentration. The odds ratio (OR) for increased CRP concentration (>3.0 mg/L) was 0.49 (95% CI 0.37-0.65; P for trend < 0.001) for the highest quintile of fiber intake compared with the lowest. Adjustment for age, gender, race, education, smoking, physical activity, BMI, total energy, and fat intake resulted in a slight attenuation (OR 0.59; CI 0.41-0.85; P for trend = 0.006). Excluding participants with cardiovascular conditions, diabetes, or cancer did not alter the results. Our findings indicate that fiber intake is independently associated with serum CRP concentration and support the recommendation of a diet with a high fiber content.
Ajani
Umed A
UA
Division of Adult and Community Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA, USA. uajani@cdc.gov
Ford
Earl S
ES
Mokdad
Ali H
AH
D000328:Adult; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000378:metabolism*; D002318:Cardiovascular Diseases / Q000209:etiology; D004043:Dietary Fiber / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007249:Inflammation / Q000097:blood; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D016017:Odds Ratio; D018570:Risk Assessment
D015415:Biomarkers; D004043:Dietary Fiber; D002097:C-Reactive Protein