Increased risk of eating disorders in women with polycystic ovary syndrome: a case-control study

Increased Prevalence of Binge Eating Disorder and Bulimia Nervosa in Women With Polycystic Ovary Syndrome: A Systematic Review and Meta-Analysis

CONTEXT

Polycystic ovary syndrome (PCOS) is associated with disordered eating/eating disorders, but prior meta-analyses are limited by small numbers.

OBJECTIVE

To inform the 2023 International PCOS Guideline, we performed a systematic review and meta-analysis evaluating the prevalence of disordered eating/eating disorders among women with and without PCOS.

METHODS

Ovid MEDLINE, EMBASE, PsycInfo, and All EMB were searched from inception through February 1, 2024, for studies that compared prevalences of eating disordered/disordered eating in adolescent or adult women. Random effects meta-analyses were used to estimate the pooled odds ratios (OR) or standardized mean differences (SMD) of outcomes in women with PCOS compared to controls. Methodological quality was assessed by the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) system, and included studies were assessed for risk of bias.

RESULTS

Of 1352 articles identified, 20 were included, with a total of 28 922 women with PCOS and 258 619 controls. Individuals with PCOS had higher odds of any eating disorder (OR: 1.53 [1.29, 1.82], 8 studies), which persisted in studies where PCOS was diagnosed by Rotterdam criteria (OR: 2.88 [1.55, 5.34], 4 studies). Odds of bulimia nervosa, binge eating disorder, and disordered eating, but not anorexia nervosa, were increased in PCOS. Mean disordered eating scores were higher in PCOS (SMD: 0.52 [0.28, 0.77], 13 studies), including when stratified by normal and higher weight body mass index. Most included studies were of moderate quality, with no evidence of publication bias.

CONCLUSION

Our study informs the 2023 PCOS Guideline recommendations for consideration of the risk of disordered eating/ eating disorders in care of women with PCOS, regardless of weight, especially during providing lifestyle counseling.

A prospective 12-month structured weight loss intervention in women with severe obesity and polycystic ovary syndrome: Impact of weight loss on eating behaviors

INTRODUCTION

The knowledge regarding eating behavior and disorders in women with polycystic ovary syndrome (PCOS) and severe obesity is limited. This study aimed to assess eating behavior and lifestyle factors in women with severe obesity (BMI ≥35 kg/m2), with and without PCOS, and the effect of weight loss on these behaviors.

MATERIAL AND METHODS

A prospective clinical trial with participants screened for PCOS using National Institutes of Health criteria. Participants completed the Food Frequency Questionnaire, International Physical Activity Questionnaire, Three-Factor Eating Questionnaire, and Questionnaire of Eating and Weight Patterns-revised, and were evaluated regarding binge eating disorder using DSM-5 criteria before and after a 12-month weight loss intervention.

CLINICALTRIALS

gov: NCT01319162.

RESULTS

246 women were included (PCOS n = 63, age 33.0 ± 8.4, BMI 39.9 ± 4.7; non-PCOS n = 183, age 37.7 ± 8.7, BMI 39.6 ± 4.3). Women with PCOS showed elevated baseline scores in cognitive restraint eating (50.0 [33.3-63.2]) compared to women without PCOS (38.9 [27.8-55.6]; p = 0.012). No differences were observed between groups in emotional and uncontrolled eating. In both groups, cognitive restraint eating was negatively correlated with energy intake (PCOS: r = -0.315, p < 0.05; non-PCOS: r = -0.214, p < 0.001), while uncontrolled eating displayed a positive correlation with energy intake (PCOS: r = 0.263, p = 0.05; non-PCOS: r = 0.402, p < 0.001). A positive correlation was found between emotional eating and energy intake only in women without PCOS (r = 0.400, p < 0.001). Baseline self-reported energy intake and physical activity did not differ between groups. At 12-month follow-up, women with PCOS reported reduced fat intake. Women without PCOS reported reduced energy intake, carbohydrates and sugar, increased protein, reduced scores for emotional and uncontrolled eating, and heightened scores for cognitive restraint eating. Comparing changes from baseline to follow-up, differences were found between groups in cognitive restraint, intake of fat, carbohydrates, and sugar. The mean weight loss was 12-14 kg, with no between-group difference (p = 0.616).

CONCLUSIONS

Women with severe obesity and PCOS showed elevated cognitive restraint eating behaviors compared to women without PCOS. Although significant weight loss was seen in both groups, alterations in eating behavior more favorable for weight loss were only seen in women without PCOS.

Disordered Eating in Young Women with Polycystic Ovary Syndrome

Polycystic ovary syndrome (PCOS) was the most prevalent endocrine disorder among women. Weight issues were commonly observed and found to be associated with comorbidities. This study aimed to compare Eating Disorder Examination Questionnaire (EDE-Q) scores and Night Eating Questionnaire (NEQ) scores in patients with and without PCOS and analyze the factors associated with disordered eating. Women aged 18-25 years with and without PCOS (n = 110 for each group) were included in the study. All patients completed the EDE-Q, NEQ, Beck Anxiety, and Beck Depression inventories. Disordered eating was found more frequently in women with PCOS than in controls (25.5% vs. 2.7%, p < 0.001). There were no significant differences in NEQ scores between the two groups. Anxiety and depression scores were higher in patients with PCOS than in controls (p = 0.002 and p = 0.001, respectively). PCOS diagnosis (OR: 7.4, CI: [1.63-33.7]; p = 0.010) and high BMI (OR: 1.24, CI: [1.10-1.39]; p < 0.001) were found to be independent factors for disordered eating (EDE-Q global score ≥ 4). Disordered eating was more common in young women with PCOS compared to the control group. PCOS diagnosis and having a high BMI (> 25) were found to be independent factors related to disordered eating in young women with PCOS. Young women with a high BMI or PCOS appear to be at a higher risk of disordered eating than women of the same age. Scanning this group may help clinicians in identifying women at high risk for eating disorders and preventing comorbidities associated with them.

Prevalence and Etiology of Eating Disorders in Polycystic Ovary Syndrome: A Scoping Review

Polycystic ovary syndrome (PCOS) is the most common endocrine-metabolic disorder affecting females across the lifespan. Eating disorders (EDs) are psychiatric conditions that may impact the development of PCOS and comorbidities including obesity, metabolic syndrome, and type 2 diabetes. The aim of this scoping review was to determine the prevalence of EDs and disordered eating, and to review the etiology of EDs in PCOS. The review was conducted using search terms addressing PCOS, EDs, and disordered eating in databases, including PubMed, Scopus, PsycINFO, and CINAHL. Structured interviews, self-administered questionnaires, chart review, or self-reported diagnosis were used to identify EDs in 38 studies included in the review. The prevalence of any ED in those with PCOS ranged from 0% to 62%. Those with PCOS were 3-6-fold more likely to have an ED and higher odds ratios (ORs) of an elevated ED score compared with controls. In those with PCOS, 30% had a higher OR of bulimia nervosa and binge ED was 3-fold higher compared with controls. Studies were limited on anorexia nervosa and other specified feeding or ED (such as night eating syndrome) and these were not reported to be higher in PCOS. To our knowledge, no studies reported on avoidant/restrictive food intake disorder, rumination disorder, or pica in PCOS. Studies showed strong associations between overweight, body dissatisfaction, and disordered eating in PCOS. The etiologic development of EDs in PCOS remains unclear; however, psychological, metabolic, hypothalamic, and genetic factors are implicated. The prevalence of any ED in PCOS varied because of the use of different diagnostic and screening tools. Screening of all individuals with PCOS for EDs is recommended and high-quality studies on the prevalence, pathogenesis of specific EDs, relationship to comorbidities, and effective interventions to treat ED in those with PCOS are needed.

New insights into the interaction between polycystic ovary syndrome and psychiatric disorders: A narrative review

Polycystic ovary syndrome (PCOS) is a prevalent endocrine disease characterized by hyperandrogenism, ovulatory dysfunction, and ovarian polycystic changes, which combines with reproductive problems, metabolic disorders, and psychological disorders to exhibit a far-reaching impact on the physical and mental health of women. We reviewed previous research and discovered that psychiatric disorders are more common in PCOS patients and their children, potentially exacerbating the condition and creating a vicious loop. To understand the reasons, relevant articles were collected following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines from PubMed, Web of Science, and Cochrane Library, through December 2022. Evidence suggested that PCOS-related clinical manifestations, hyperandrogenism, insulin resistance, obesity, gut dysbiosis, and other variables may increase the risk of psychiatric disorders in patients. In turn, psychiatric disorders may aggravate the pathologic process of PCOS and increase the difficulty of the treatment. We systematically reported the mechanisms underlying the psychiatric disorders-PCOS interactions, intending to provide potential ways to break the vicious cycle and lay the groundwork for future research. However, research on PCOS and psychiatric disorders were still in initial stages, which limited the scope of this review. More studies are needed to further verify our findings.

Body mass index and quality of life in individuals with polycystic ovary syndrome: Dysmorphic concerns and eating disorders as mediators

Objective

Weight issues, dysmorphic concerns and eating disorders are common among individuals with polycystic ovary syndrome (PCOS) and are linked to poor quality of life (QoL). The goal of the current study was to examine whether the association between body mass index (BMI) and QoL was mediated by dysmorphic concerns, examining also the relations with eating disorder symptomatology.

Methods

Questionnaires were administered to 435 individuals with PCOS aged between 18 and 40 years (M = 27.62; SD = 4.83) to measure dysmorphic concerns, eating disorder symptoms and QoL. Participants were also asked to report their height and weight to compute their BMI.

Results

Structural equation modeling was used to observe the relationship between the variables. The results revealed a direct relationship between QoL, BMI, dysmorphic concerns and eating disorder symptomatology. In addition, dysmorphic concerns were related to BMI and eating disorder symptomatology. Furthermore, the results showed the mediating role of dysmorphic concerns and eating disorder symptoms in the relationship between BMI and QoL.

Conclusion

The current results highlight the potential importance of harmful relationships with one's own body and food, explaining why weight issues may be linked to different levels of QoL in PCOS individuals. The implications of these findings are discussed.