Polycystic ovary syndrome (PCOS) · Causes and risk factors

An adult looks at a cycle calendar on their phone, with some dates marked and no identifying information.

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Published: November 12, 2026 · Updated: November 12, 2026

PCOS in the Family: What Family History Suggests—and What It Cannot Predict

Polycystic ovary syndrome can affect more than one person in a family. Knowing about a family history provides context, but it does not confirm a diagnosis or predict who will have PCOS.

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A health care professional reviews glucose and insulin results on a screen during a clinical evaluation.

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Published: October 11, 2026 · Updated: October 11, 2026

Insulin and Polycystic Ovary Syndrome: A Relationship That Does Not Explain Every Case

Learn how insulin resistance may be related to polycystic ovary syndrome (PCOS), why it does not explain every case, and how metabolic assessment is individualized.

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A household calendar with some dates marked at varying intervals to keep a personal record of menstrual cycles.

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Published: July 8, 2026 · Updated: July 8, 2026

Cycles, Acne, and Fertility: What to Share If You’re Seeking Care for PCOS

How to summarize your cycle pattern, changes in your skin or hair growth, and, if applicable, your reproductive history when discussing a possible PCOS evaluation.

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An adult notes menstrual cycle dates on a calendar, one of the changes that may prompt an evaluation for PCOS.

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Published: July 2, 2026 · Updated: July 2, 2026

PCOS and Weight: A Complex Relationship, Not an Explanation or a Cause for Blame

Polycystic ovary syndrome can affect people of different body sizes. Learn what weight can and cannot tell you about PCOS, and why evaluation should consider symptoms and metabolic health.

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Personal calendar with menstrual dates recorded irregularly; the record alone does not confirm PCOS.

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Published: May 29, 2026 · Updated: May 29, 2026

PCOS: Predisposition, Associated Factors, and Why There Is No Single Cause

Learn what is known about PCOS predisposition and mechanisms, and why associated factors are not the same as a cause or a reason to blame yourself.

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Two family members talk at home about a diagnosis of polycystic ovary syndrome and menstrual history.

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Published: April 24, 2026 · Updated: April 24, 2026

Polycystic Ovary Syndrome: The Role of Family History

Learn what family history may contribute to understanding polycystic ovary syndrome, what information to share during an evaluation, and why family history does not confirm a diagnosis.

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