Research
Hormonal
Obesity acts as a magnifying factor in PCOS by increasing extraovarian estrogen and androgen synthesis via aromatase activity in adipose tissue, thereby worsening the hormonal imbalance.
For obese women with PCOS, even modest weight loss (5%) can significantly improve menstrual regularity and fertility outcomes by reducing the extraovarian production of hormones that worsen the condition.
GoodSupportsHIGH confidence
Obesity appears to magnify all events in this cycle, by increasing androgen synthesis not only in ovaries, but also in SAT and adrenal glands.
Why this rating
Review article summarizing established mechanisms.
Source
Polycystic Ovary Syndrome, Insulin Resistance, and Obesity: Navigating the Pathophysiologic Labyrinth
Joselyn Rojas et al. · International Journal of Reproductive Medicine · 2014
DOI 10.1155/2014/719050
narrative_reviewCited 450×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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