Association between Coffee Consumption and Polycystic Ovary Syndrome: An Exploratory Case–Control Study

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Abstract
Polycystic ovary syndrome (PCOS) is a leading cause of infertility, with an estimated worldwide prevalence between 5% and 15%. We conducted a case–control study with 121 PCOS patients and 155 controls to assess the association between coffee intake and the presence of having a diagnosis of PCOS in women in Murcia, Spain. The PCOS diagnosis was determined following Rotterdam criteria (the presence of two of the following three conditions: hyperandrogenism, oligo-anovulation, and/or polycystic ovarian morphology). Coffee consumption was assessed using a validated food frequency questionnaire. Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using multiple logistic regression. Coffee consumption was categorized into never, less than one cup per day, one cup per day, and two or more cups per day. We found a significant inverse linear trend: the higher the coffee consumption, the lower the probability of having PCOS in multivariable analysis (p-trend = 0.034). Women who presented with PCOS were less likely to drink one cup of coffee compared to those who had never drunk coffee (OR = 0.313, 95% CI: 0.141–0.69). The consumption of at least one cup of coffee per day may be associated with a decrease in PCOS symptoms.
Funding Information
  • Ministry of Economy and Competitiveness, Instituto de Salud Carlos III (ISCIII) (PI13/01237, 19443/PI/14)
  • Seneca Foundation, Murcia Regional Agency of Science and Technology (PI13/01237, 19443/PI/14)

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