Association between visceral adiposity index and endometriosis: a population-based study
Jiajia Zhang1, Qian Zhang1, Tianyu Chu1
1Obstetrics, Gynecology and Reproduction Research Center, Affiliated Hospital of Jiangnan University, Wuxi, China.
Frontiers in Nutrition
|August 5, 2025
Summary
The visceral adiposity index (VAI) is positively associated with endometriosis risk. This study found a significant link between higher VAI and increased odds of endometriosis, highlighting VAI as a potential indicator.
Area of Science:
- Reproductive Health
- Metabolic Health
- Obesity Research
Background:
- Obesity and endometriosis share complex links, with Body Mass Index (BMI) being a common but limited measure.
- The Visceral Adiposity Index (VAI) offers a novel, cost-effective assessment of visceral fat accumulation and metabolic status.
- Understanding novel obesity indicators like VAI is crucial for endometriosis research.
Purpose of the Study:
- To investigate the association between the Visceral Adiposity Index (VAI) and endometriosis.
- To evaluate VAI as a potential indicator for endometriosis risk.
- To explore the relationship between visceral adiposity and endometriosis prevalence.
Main Methods:
- Cross-sectional study utilizing NHANES data (1999-2006) of participants aged 20 years and older.
- Employed multivariable-adjusted logistic regression, trend tests, sensitivity, subgroup analyses, and Restricted Cubic Spline (RCS) curves.
- Included 2,056 participants, with 163 diagnosed with endometriosis.
Main Results:
- A significant positive association was observed between VAI and endometriosis (OR=1.08, 95% CI: 1.04-1.12, p < 0.001).
- Restricted Cubic Spline analysis revealed a linear positive correlation between VAI and endometriosis (p-overall < 0.001).
- Subgroup analyses indicated no statistically significant interaction effects from demographic, lifestyle, or reproductive factors.
Conclusions:
- The study confirms a statistically significant association between VAI and endometriosis.
- VAI may serve as a valuable indicator in assessing endometriosis risk.
- Further large-scale prospective cohort studies are recommended to validate these findings given the unclear etiology of endometriosis.
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