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Published on: June 4, 2014
Association between dietary fiber intake and visceral fat volume: A cross-sectional study based on NHANES 2011-2018
Jiancheng Bo1, Mingyue Yang2, Qingchao Ru1
1Department of Orthopedics, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China.
Background:
Excessive visceral adipose tissue (VAT) is a key driver of metabolic diseases, yet modifiable dietary strategies for VAT reduction remain underexplored.
Objective:
This cross-sectional study examined the association between dietary fiber intake and visceral fat volume in U.S. adults.
Methods:
Using 2011-2018 NHANES data from 9111 adults aged 20-59 years, dietary fiber intake was assessed via two 24-hour recalls, and VAT volume was measured by DXA. Weighted gamma regression models adjusted for age, sex, BMI, and lifestyle factors evaluated dose-response relationships.
Results:
Higher fiber intake was inversely associated with VAT volume (P for trend <0.001). Compared to the lowest intake group (<15 g/day), adjusted VAT reductions were 4.1 % (95 % CI: 2.3-5.9 %), 7.6 % (4.4-10.6 %), and 6.8 % (2.8-10.6 %) for 15-25, 25-35, and > 35 g/day groups, respectively. Restricted cubic splines confirmed linearity (P = 0.67), with stronger effects in females. Sensitivity analyses excluding extreme intake values (>60 g/day) validated robustness.
Conclusion:
Increased dietary fiber intake is associated with lower visceral adiposity, suggesting a potential strategy for mitigating metabolic risk in U.S. adults.
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