If you've been diagnosed with PCOS, or suspect you might have it, you already know it comes with more questions than answers. Can you actually do something about it? Yes, quite a lot. And it starts with understanding what's really going on.
PCOS affects 1 in 10 women of reproductive age. Up to 70% go undiagnosed at some point. And it's the leading hormonal cause of female infertility. Yet it's also one of the conditions most responsive to lifestyle intervention, which is genuinely good news.
What PCOS actually is (and isn't)
PCOS is a hormonal condition, not just an ovarian one. You don't need cysts, or even irregular periods, to be diagnosed. It's defined by elevated androgens, irregular ovulation, and sometimes multiple small follicles visible on the ovaries via ultrasound.
The underlying driver is usually insulin resistance. When cells don't respond to insulin efficiently, the body produces more of it, and high insulin signals the ovaries to produce more androgens. That cascade is what drives the symptoms and there are more of them than most people realize.
Doctors diagnose PCOS using the Rotterdam criteria. You need at least 2 out of these 3 features (once other causes are ruled out):
1. Irregular or absent ovulation
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Infrequent, unpredictable, or absent periods
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Heavy or painful periods when they do occur
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Cycles longer than 35 days, or fewer than 8 periods a year
2. Signs of excess androgens (high male hormones)
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Excess facial or body hair (chin, chest, stomach, back (affects up to 70% of people with PCOS))
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Acne, particularly on the face, chest, and upper back
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Oily skin
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Thinning hair or female-pattern hair loss on the scalp
3. Polycystic ovaries on ultrasound
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Multiple small follicles visible on the ovaries
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Can be present without any other obvious symptoms
Other commonly reported symptoms (not part of the criteria, but frequently experienced):
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Weight gain or difficulty losing weight, especially around the abdomen
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Darkened patches of skin in body folds like the neck, armpits, groin (acanthosis nigricans)
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Mood changes, anxiety, or low mood
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Difficulty conceiving
Not everyone experiences all of these. PCOS looks different from person to person, and symptoms can range from mild to significant. Many women only find out they have it when trying to conceive.
"PCOS doesn't mean you can't have children. It means your hormones need more attention and the lifestyle levers are more powerful here than in almost any other condition."
The four lifestyle levers
1. Nutrition: stabilize blood sugar first
The most impactful dietary shift is managing insulin spikes. Not cutting carbs entirely, but choosing them wisely. Pair carbohydrates with protein, fat, or fibre. Prioritize low-glycaemic foods. Cut back on ultra-processed foods and refined grains. A Mediterranean-style eating pattern has the strongest evidence base for PCOS and covers all of this without rigid tracking.
2. Movement: consistency beats intensity
Strength training combined with moderate cardio outperforms cardio alone. Resistance training builds muscle that helps regulate blood sugar over time. Excessive high-intensity exercise can raise cortisol and compound the hormonal imbalance, so aim for three to five enjoyable sessions a week rather than punishing workouts.
3. Sleep: an underrated hormonal intervention
One week of disrupted sleep can meaningfully impair glucose metabolism. For people with PCOS, who already have underlying insulin dysregulation, poor sleep compounds quickly. Seven to nine hours of consistent, quality sleep, same bedtime, dark room, no screens, is a real treatment tool, not a nice-to-have.
4. Stress: the cortisol-androgen link
Chronic stress raises cortisol, which signals the adrenal glands to produce more androgens. Managing stress is part of treating PCOS, not separate from it. Consistent, low-effort practices like short walks, breath work, protecting downtime, dampen the stress response far better than occasional intense resets.
Supplements worth knowing about
Some supplements have solid evidence for PCOS as a complement to lifestyle changes:
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Inositol (myo + D-chiro) — improves insulin sensitivity and ovulation regularity; among the most studied natural interventions
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Magnesium — often depleted in insulin resistance; supports sleep and glucose metabolism
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Vitamin D — deficiency is common in PCOS and correlates with worse outcomes
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Omega-3s — reduce androgen levels and inflammation
Check with your doctor before starting, especially if you're on medication. Inositol is particularly worth discussing if you're trying to conceive.
What this means for your fertility
PCOS is the leading cause of ovulatory infertility, but also one of the most treatable. Many people conceive naturally once cycles regulate. For others, ovulation induction, IUI, and IVF all have strong success rates with PCOS. And because PCOS often comes with higher-than-average ovarian reserve, it can actually be an advantage for egg freezing.
Knowing your baseline AMH, AFC and hormone profile, gives you a real picture of where you stand and what timeline you're working with.
"Getting tested isn't about finding bad news. It's about having actual data to plan with so your decisions are based on your body, not on averages or assumptions."
The bottom line
PCOS is manageable at the hormonal root, not just symptom by symptom. Start with blood sugar, movement, and sleep. Add targeted supplements where relevant. And get tested so whatever you decide next, you're deciding with clarity.
Want to understand how PCOS is affecting your fertility specifically?
Gatachi combines your hormone profile, cycle data, and personal goals into a personalized fertility report, giving you a clear timeline and next steps based on your biology.