Low intakes of dietary fiber and magnesium are associated with insulin resistance and hyperandrogenism in polycystic ovary syndrome: A cohort study
Cutler DA, Pride SM, Cheung AP
Food science & nutrition · 41 citations
How it was studied
- Design
- Cohort study (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
Based on full-text disclosure statement.
Publication
- Published
- 2019-02-27 · Food Sci Nutr · vol. 7 · issue 4 · pp. 1426–1437
- Publisher
- Wiley
- Cited
- 69 citations · more than 98% of similar papers · 9.7× the field average
- Impact
- Top 10% most cited in its field
- References
- 63 works
- Access
- Open access (hybrid journal) · CC-BY
- Research areas
- Ovarian function and disorders · Magnesium in Health and Disease · Reproductive Biology and Fertility
- Keywords
- Polycystic ovary, Medicine, Endocrinology, Internal medicine, Insulin resistance, Hyperandrogenism, Dehydroepiandrosterone sulfate, Body mass index, Obesity, Testosterone (patch), Insulin, Glycemic index, Hormone, Glycemic, Androgen
3 authors
From CA
- Dylan A. CutlerUniversity of British Columbia
- Sheila M. PrideUniversity of British Columbia
- Anthony P. Cheung · correspondingUniversity of British Columbia
Abstract
Background
Women with polycystic ovary syndrome (PCOS) often have insulin resistance (IR) which may be worsened by obesity. The roles of dietary intake and activity are unclear. Our objectives were to determine whether (a) high caloric intake or inactivity explains obesity in PCOS, and (b) dietary composition is associated with PCOS phenotypes.
Methods
Eighty-seven women with PCOS and 50 women without PCOS participated in this cohort study at a reproductive medicine center. Data collected included 3-day food and physical activity records, anthropometrics, and metabolic and hormonal assays.
Results
Women with PCOS had increased body mass index (BMI) but similar caloric intake and activity to women without PCOS. There were no differences in protein, carbohydrates, fat, or glycemic load consumption, but women with PCOS consumed less fiber (medians: 19.6 vs. 24.7 g) and less magnesium (medians: 238.9 vs. 273.9 mg). In women with PCOS, those with IR consumed less fiber, less magnesium, and greater glycemic load than those without IR (medians: 18.2 vs. 22.1 g, 208.4 vs. 264.5 mg, 89.6 vs. 83.5). Fiber intake of women with PCOS was negatively correlated with IR, fasting insulin, glucose tolerance, testosterone, and dehydroepiandrosterone sulfate. Magnesium intake was negatively correlated with IR, C-reactive protein, and testosterone, but positively correlated with HDL cholesterol. Fiber intake and BMI accounted for 54.0% of the variance observed in IR.
Conclusions
Obesity in women with PCOS could not be explained by overeating or inactivity. Increasing dietary fiber and magnesium intakes may assist in reducing IR and hyperandrogenemia in women with PCOS.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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