Dataset Information

Adiposity is associated with anovulation independent of serum free testosterone: A prospective cohort study.

ABSTRACT:

Background

Obesity, a body mass index (BMI) ≥30 kg/m² , is linked to infertility, potentially through a greater risk of anovulation due to elevated androgens. Yet, previous studies have not directly assessed the impact of adiposity, or body fat, on anovulation in the absence of clinical infertility.

Objective

To characterise the associations between adiposity and anovulation among women menstruating on a regular basis.

Methods

Women from the EAGeR trial (n = 1200), a randomised controlled trial of low-dose aspirin and pregnancy loss among women trying to conceive, were used to estimate associations between adiposity and incident anovulation. Participants completed baseline questionnaires and anthropometry, and provided blood specimens. Women used fertility monitors for up to six consecutive menstrual cycles, with collection of daily first morning voids for hormone analysis in the first two menstrual cycles for prospective assessment of anovulation. Anovulation was assessed by urine pregnanediol glucuronide or luteinising hormone concentration or the fertility monitor. Weighted mixed-effects log-binomial regression was used to estimate associations between measures of adiposity and incident anovulation, adjusted for free (bioavailable) testosterone, anti-Mullerian hormone (AMH), serum lipids, and demographic and life style factors.

Results

343 (28.3%) women experienced at least one anovulatory cycle. Anovulation risk was higher per kg/m² greater BMI (relative risk [RR] 1.03, 95% confidence interval (CI) 1.01, 1.04), cm waist circumference (RR 1.01, 95% CI 1.00, 1.02), mm subscapular skinfold (RR 1.02, 95% CI 1.01, 1.03), and mm middle upper arm circumference (RR 1.04, 95% CI 1.01, 1.06) adjusted for serum free testosterone, AMH, lipids, and other factors.

Conclusions

Adiposity may be associated with anovulation through pathways other than testosterone among regularly menstruating women. This may account in part for reported associations between greater adiposity and infertility among women having menstrual cycles regularly. Understanding the association between adiposity and anovulation might lead to targeted interventions for preventing infertility.

SUBMITTER: Bloom MS

PROVIDER: S-EPMC7878298 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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Publications

Adiposity is associated with anovulation independent of serum free testosterone: A prospective cohort study.

Bloom Michael S MS Perkins Neil J NJ Sjaarda Lindsey A LA Mumford Sunni L SL Ye Aijun A Kim Keewan K Kuhr Daniel L DL Nobles Carrie J CJ Connell Matthew T MT Schisterman Enrique F EF

Paediatric and perinatal epidemiology 20201026 2

<h4>Background</h4>Obesity, a body mass index (BMI) ≥30 kg/m<sup>2</sup> , is linked to infertility, potentially through a greater risk of anovulation due to elevated androgens. Yet, previous studies have not directly assessed the impact of adiposity, or body fat, on anovulation in the absence of clinical infertility.<h4>Objective</h4>To characterise the associations between adiposity and anovulation among women menstruating on a regular basis.<h4>Methods</h4>Women from the EAGeR trial (n = 1200 ...[more]

PMID: 33107110

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Dataset Information

Adiposity is associated with anovulation independent of serum free testosterone: A prospective cohort study.

Background

Objective

Methods

Results

Conclusions

Publications

Adiposity is associated with anovulation independent of serum free testosterone: A prospective cohort study.

Similar Datasets

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