Evidence map›Paper›PMID 41031338›Full record

ArticleInternational journal of women's health2025

Beyond BMI: A Mendelian Randomization Study of the Causal Effects and Mediating Pathways of Regional Adipose Tissue Depots on Polycystic Ovary Syndrome.

Jing Yang, Xihui Zhang, Hui Zhang, Xiaolu Guo, Fengjuan Ren, Cui Dong

Abstract read
In one paragraph

Article in International journal of women's health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. PMOS in black girls and women: from high to low risk.Journal of endocrinological investigation · 2026
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Jing YangDepartment of Reproductive Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, People's Republic of China.
Xihui ZhangDepartment of Reproductive Medicine, Handan Center Hospital, Handan, Hebei Province, People's Republic of China.
Hui ZhangDepartment of Reproductive Medicine, Handan Center Hospital, Handan, Hebei Province, People's Republic of China.
Xiaolu GuoGynecological Consultation Room, Handan Center Hospital, Handan, Hebei Province, People's Republic of China.
Fengjuan RenDepartment of Reproductive Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, People's Republic of China.
Cui DongDepartment of Reproductive Medicine, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, People's Republic of China.ORCID 0009-0001-7670-6822

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Previous studies suggest that increased body fat is associated with polycystic ovary syndrome (PCOS) risk. Recent evidence highlights that the distribution of adipose tissue may play a more critical role in predicting PCOS risk compared to total fat mass; however, causal relationships remain unclear. This Mendelian randomization (MR) study aimed to investigate the causal associations between body mass index (BMI)-independent regional adipose tissue distribution and PCOS risk. Methods: Female-specific data on regional adipose tissue depots (n Results: Genetically predicted higher GFAT volume demonstrated a significant causal protective effect on PCOS risk (OR = 0.845, 95% CI: 0.735-0.971). This protective effect was predominantly mediated through reductions in fasting insulin (58.37%, 95% CI: 27.66-89.08%) and leptin (51.75%, 95% CI: 33.54-75.41%). Other mediators included the homeostasis model assessment of insulin resistance (HOMA-IR; 37.20%), sex hormone-binding globulin (SHBG; 24.74%), bioavailable testosterone (BT; 11.99%), and triglycerides (TG; 9.52%). Additionally, suggestive evidence driven by a single genetic instrument linked higher VAT/ASAT, VAT/GFAT, and ASAT/GFAT ratios to increased PCOS risk (OR > 1). Sensitivity analyses and supplementary methods confirmed the robustness of these findings. Conclusion: This study provides causal evidence supporting the protective role of GFAT against PCOS and identifies critical metabolic and hormonal pathways as mediators. These results highlight the significance of adipose tissue distribution patterns in the pathogenesis of female endocrine disorders.

Indexed as

abdominal subcutaneous adipose tissuegluteofemoral adipose tissueMendelian randomizationpolycystic ovary syndromevisceral adipose tissue

Identifiers

PMID41031338
PMCPMC12478199

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.