The ICMR's landmark national study puts PCOS prevalence at up to 19.6% of Indian women by Rotterdam criteria. Dr. Neha Sain explains what that number means for you, why thyroid disorders must be ruled out first, and what a realistic management plan looks like.
Let me start with a number that still surprises many of my patients when I share it in the consultation room: according to the ICMR-PCOS National Task Force study — the largest and most rigorous Indian data we have on this condition — up to 19.6% of Indian women of reproductive age meet the Rotterdam diagnostic criteria for Polycystic Ovary Syndrome. That is roughly one in five women. The same study found significantly higher prevalence in urban areas and in central and northern India, which aligns very closely with the patient population I see every day.
And yet, despite these numbers, a large proportion of women with PCOS go undiagnosed for years — sometimes a decade or more. They are told their periods are "just irregular," their weight is "just stress," and their acne is "just hormonal." Technically, that last one is accurate. But it is not the full picture, and it is not a reason to wait and watch without investigation.
This article is my attempt to lay out what PCOS actually is, how it is properly diagnosed in an Indian clinical context, and what a realistic management plan looks like — not a generic one, but one that accounts for how Indian women actually live, eat, and experience this condition.
What PCOS actually is — and what it is not
PCOS is a hormonal and metabolic condition. The name is a bit misleading — "polycystic" suggests that cysts are the defining feature, but that is not quite right. The three features that define PCOS under the Rotterdam 2003 criteria (which FOGSI uses in Indian clinical practice) are:
- Irregular or absent ovulation — meaning your cycle is often more than 35 days, or you have fewer than eight periods a year
- Biochemical or clinical signs of elevated androgens — such as hirsutism (unwanted hair), acne, or raised testosterone on a blood test
- Polycystic ovarian morphology on ultrasound — the classic "string of pearls" appearance
A diagnosis requires only two of these three. This matters because many women with PCOS have normal-looking ovaries on ultrasound, and many women without PCOS have a similar appearance. The ultrasound is one piece of a larger picture, not the diagnosis itself.
It is also important to know that PCOS is a diagnosis of exclusion. Before arriving at this conclusion, your doctor should rule out other conditions that can produce identical symptoms — thyroid disorders (both hypo- and hyperthyroidism), hyperprolactinemia, Cushing's syndrome, non-classical congenital adrenal hyperplasia, and androgen-secreting tumours. In India, hypothyroidism is particularly common and frequently co-exists with PCOS, which is why a TSH level is one of the first tests I order.
Recognising the signs — and some that are often missed
The familiar symptoms — irregular periods, weight gain, acne, facial hair — are well known. But there are a few signs that deserve more attention in Indian patients specifically:
Acanthosis nigricans: Those dark, velvety patches of skin that appear around the neck, underarms, or inner thighs are not a skin condition. They are a visible marker of insulin resistance, and FOGSI's 2023 clinical practice guidelines explicitly recognise acanthosis nigricans as an additional diagnostic criterion for PCOS in Indian women. If you have this and have never had it investigated, please bring it up with your gynaecologist.
Mood and mental health: Anxiety and depression occur at significantly higher rates in women with PCOS than in the general population. This is partly driven by the hormonal environment, partly by the metabolic features of the condition, and partly by the very real psychological weight of living with symptoms that affect your appearance and fertility. This is not a side issue — it is central to your care, and it is one of the reasons an integrated approach matters.
Skin and hair changes: Thinning of scalp hair (androgenic alopecia) alongside oily skin and persistent acne — especially along the jawline — can indicate elevated androgens even when blood tests are borderline.
What causes PCOS? The honest answer
There is no single cause, and anyone who tells you otherwise is oversimplifying. The most well-supported model is that PCOS involves a combination of:
- Insulin resistance: The majority of women with PCOS — lean and overweight alike — show some degree of insulin resistance. When cells do not respond normally to insulin, the body produces more of it, and high insulin signals the ovaries to produce more androgens. This is why PCOS, blood sugar regulation, and metabolic health are so deeply intertwined.
- Genetic predisposition: PCOS runs in families. If your mother, sister, or maternal aunts have irregular cycles, this is worth telling your doctor.
- Environmental and lifestyle factors: Poor sleep, chronic stress, and dietary patterns high in refined carbohydrates amplify insulin resistance and can worsen the hormonal picture.
Nothing about this list points to something you did wrong. PCOS is not caused by eating too much, not exercising enough, or any personal failing. It is a medical condition with a complex biological basis.
The metabolic side of PCOS — why it matters long-term
The ICMR-PCOS study found remarkably high rates of metabolic co-morbidities in Indian women with PCOS: dyslipidaemia (abnormal cholesterol or triglycerides) in 91.9% of participants, non-alcoholic fatty liver disease in 32.9%, and metabolic syndrome in 24.9%. These are not minor findings. They are the reason why PCOS, left unmanaged, increases long-term risk for type 2 diabetes, cardiovascular disease, and endometrial problems.
This is not meant to alarm you. It is meant to explain why taking PCOS seriously — even if your only current concern is irregular periods — is genuinely worth your time and attention.
How PCOS is diagnosed in practice
When a patient comes to me with suspected PCOS, the evaluation typically includes:
- A detailed menstrual and symptom history
- Blood tests: LH, FSH, testosterone (total and free), DHEA-S, prolactin, TSH, fasting insulin, fasting glucose, HbA1c, full lipid profile, and liver function tests
- A pelvic ultrasound, ideally transvaginal in adults (for better resolution) but transabdominal is also acceptable
- Physical examination noting BMI, blood pressure, and skin findings including acanthosis nigricans and the Ferriman-Gallwey score for hirsutism
The diagnosis is clinical — no single test confirms or rules out PCOS.
Management: what actually works
FOGSI's 2023 Good Clinical Practice Recommendations are clear: lifestyle modification is the first-line treatment for all women with PCOS, regardless of weight. Here is what that means in practical terms.
Diet
There is no single "PCOS diet," but the evidence consistently favours a low glycaemic index (low-GI) approach. For Indian eating patterns, this translates to:
- Choosing millets (ragi, jowar, bajra) over refined wheat products where possible
- Prioritising dals, legumes, and whole pulses as protein and fibre sources
- Reducing refined sugar, maida-based foods, white rice consumed in large quantities, and packaged snacks
- Eating at regular intervals — skipping meals worsens insulin resistance
A 5–10% reduction in body weight in women who are overweight produces measurable improvements in cycle regularity, androgen levels, and ovulation — often without any medication at all.
Movement
Thirty minutes of moderate exercise on most days of the week — walking, swimming, cycling, yoga — has a direct, well-documented effect on insulin sensitivity. Resistance training (weights or bodyweight exercises) is particularly effective for metabolic PCOS and is underused. The type of exercise matters less than the consistency.
Sleep and stress
Chronic sleep deprivation and sustained psychological stress both worsen insulin resistance and elevate cortisol, which interacts directly with ovarian androgen production. This is not a soft recommendation — it is mechanistically relevant to your hormonal health.
Medical management
When lifestyle changes alone are insufficient (typically assessed after three to six months of genuine effort), your doctor may recommend:
- Metformin: Reduces insulin resistance, often improves cycle regularity, and has a strong evidence base for PCOS in Indian patients
- Combined oral contraceptives: Can regulate cycles, reduce androgens, and treat acne and hirsutism — the specific formulation matters and should be chosen by your doctor
- Inositols (myo-inositol and D-chiro-inositol): Growing evidence supports their use in improving insulin sensitivity and ovulation, with a good safety profile
- Clomiphene or letrozole: If fertility is your primary concern, these are the medications used to stimulate ovulation — always under specialist supervision
No medication should be started without proper evaluation. What works for one phenotype of PCOS may not be appropriate for another.
Fertility and PCOS
Many women with PCOS do conceive without intervention, especially with lifestyle improvements. For those who need help, ovulation induction is well-established and effective. PCOS is not a sentence of infertility — but it does benefit from planned, proactive management if conception is your goal.
The part nobody talks about enough
I see many women who have spent years feeling that their body is working against them. The visible symptoms — hair where you do not want it, acne at thirty, a number on the scale that will not move — can quietly erode confidence and emotional wellbeing. That toll is real, and it deserves the same attention as any blood test result.
If you are struggling emotionally alongside the physical symptoms, please name it. It is not weakness. It is one of the most common experiences of PCOS, and it can be addressed alongside the hormonal management.
A note on what to do next
If you have symptoms that make you wonder whether you have PCOS — irregular cycles, signs of elevated androgens, unexplained difficulty conceiving — getting a proper evaluation is the most useful thing you can do. The earlier the condition is identified and managed, the better the long-term outcomes, both for your cycles and for your metabolic health.
If you would like to describe your symptoms and get a personalised written assessment from me, you can do that through a Smart Consultation. I will review your history carefully and respond with a clear, practical plan within 48 hours.
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