Hormonal health explainer

What causes PCOS?

A simple explanation of what may contribute to PCOS, including hormone imbalance, insulin resistance, family history, and ovulation changes.

Dr. Farwa Hameed
Dr. Farwa Hameed MBBS, FCPS, MRCOG (UK)
March 13, 2026 1 min read Women's Health

Quick Answer

PCOS does not have one single cause. It is usually linked to a combination of hormone imbalance, insulin resistance, family tendency, and ovulation dysfunction. That is why treatment works best when it is tailored to the symptoms and fertility goals of the patient.

Table of Contents

  1. Hormones and ovulation
  2. Insulin resistance and weight-related effects
  3. Why proper diagnosis matters
  4. Frequently Asked Questions
  5. Related Articles

Hormones and ovulation

PCOS often involves changes in how the ovaries ovulate and how hormones are balanced. These changes can affect periods, fertility, acne, and hair growth.

Insulin resistance and weight-related effects

Some patients with PCOS also have insulin resistance, which can make weight management harder and may increase long-term metabolic risk. Not every patient with PCOS is overweight, but insulin-related patterns still matter.

Why proper diagnosis matters

Because several factors can overlap, treatment should be based on your symptoms, menstrual pattern, blood work, ultrasound findings, and whether you are trying to conceive.

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Frequently Asked Questions

Did stress alone cause my PCOS?
Stress may affect symptoms and cycle timing, but PCOS is usually more complex than stress alone.
Can slim women also have PCOS?
Yes. PCOS can affect women across different body types.
Will treating PCOS help with fertility?
In many cases, yes. Targeted management can improve ovulation and fertility planning.
Dr. Farwa Hameed

About the Author

Dr. Farwa Hameed

MBBS, FCPS, MRCOG (UK) • Gynecologist and Obstetrician

Dr. Farwa Hameed is a fellowship-trained gynecologist & obstetrician based in Islamabad with 14+ years of experience. She practices at Hyaat International Hospital (G-13) and Saeed International Hospital (G-11 Markaz).

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Medical disclaimer: This content is for patient education only and does not replace professional medical advice. Seek urgent care for severe pain, heavy bleeding, fainting, or sudden pregnancy complications.

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