Research
Hormonal
Insulin resistance in obese women directly impairs fertility by stimulating ovarian androgen synthesis and reducing sex hormone-binding globulin (SHBG), leading to hyperandrogenism and ovulatory dysfunction.
Insulin resistance doesn't just affect blood sugar; it directly tells your ovaries to produce more testosterone and reduces the protein that binds it, leaving more active testosterone to disrupt ovulation. Managing insulin sensitivity is key to restoring hormonal balance.
GoodSupportsHIGH confidence
hyperinsulinemia potentiates gonadotropin-stimulated ovarian androgen synthesis... insulin inhibits the hepatic synthesis of sex hormone-binding globulin (SHBG), thus increasing free testosterone levels
Why this rating
Supported by in vitro and animal studies cited in the review, showing clear mechanistic links.
Source
The Deep Correlation between Energy Metabolism and Reproduction: A View on the Effects of Nutrition for Women Fertility
Roberta Fontana et al. · Nutrients · 2016
DOI 10.3390/nu8020087
narrative_reviewCited 212×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Obesity (BMI > 30 kg/m2) significantly impairs female fertility by causing insulin resistance, altering adipokine profiles (high leptin, low adiponectin), and disrupting the hypothalamic-pituitary-gonadal axis, leading to ovulatory disorders and reduced spontaneous conception rates.Good
- Underweight status (BMI < 19 kg/m2) and strenuous physical activity impair fertility by suppressing the hypothalamic-pituitary-gonadal axis, leading to longer time to pregnancy and potential amenorrhea.Good
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