Association between dietary fiber and markers of systemic inflammation in the Women's Health Initiative Observational Study

UMMS Affiliation

Department of Medicine, Division of Preventive and Behavioral Medicine

Publication Date


Document Type



Aged; Biological Markers; C-Reactive Protein; Dietary Fiber; Ethnic Groups; Female; Humans; Inflammation; Interleukin-6; Linear Models; Middle Aged; Postmenopause; Receptors, Tumor Necrosis Factor, Type II; United States


Community Health and Preventive Medicine | Dietetics and Clinical Nutrition | Women's Health


OBJECTIVE: Systemic inflammation may play an important role in the development of atherosclerosis, type 2 diabetes, and some cancers. Few studies have comprehensively assessed the direct relations between dietary fiber and inflammatory cytokines, especially in minority populations. Using baseline data from 1958 postmenopausal women enrolled in the Women's Health Initiative Observational Study, we examined cross-sectional associations between dietary fiber intake and markers of systemic inflammation (including serum high-sensitivity C-reactive protein [hs-CRP], interleukin-6 [IL-6], and tumor necrosis factor-alpha receptor-2 [TNF-alpha-R2]) in addition to differences in these associations by ethnicity.

METHODS: Multiple linear regression models were used to assess the relation between fiber intake and makers of systemic inflammation.

RESULTS: After adjustment for covariates, intakes of dietary fiber were inversely associated with IL-6 (P values for trend were 0.01 for total fiber, 0.004 for soluble fiber, and 0.001 for insoluble fiber) and TNF-alpha-R2 (P values for trend were 0.002 for total, 0.02 for soluble, and

CONCLUSION: These findings lend support to the hypothesis that a high-fiber diet is associated with lower plasma levels of IL-6 and TNF-alpha-R2. Contrary to previous reports, however, there was no association between fiber and hs-CRP among postmenopausal women. Future studies on the influence of diet on inflammation should include IL-6 and TNF-alpha-R2 and enroll participants from ethnic minorities.

DOI of Published Version



Nutrition. 2008 Oct;24(10):941-9. Link to article on publisher's site

Journal/Book/Conference Title

Nutrition (Burbank, Los Angeles County, Calif.)

Related Resources

Link to Article in PubMed

PubMed ID