PCOS Causes, Symptoms, and Treatments

Worried about thinning hair and wondering what might be the cause? Learn how Polycystic Ovary Syndrome (PCOS) causes hair loss, how to spot the signs early, and discover what treatments to reverse the condition.

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What Happens with PCOS Hair Loss?

PCOS-related hair loss is caused by hormonal imbalances, particularly elevated androgens, which lead to gradual thinning of the hair on top of the scalp. It typically presents as gradual hair loss across the top and crown — a pattern known as female-pattern hair loss (FPB). The main driver is excess testosterone, which converts into DHT, binding to hair follicles and causing them to shrink.

Early Signs of PCOS Hair Loss

Gradual thinning across the crown or top of the scalp
Hair looks finer and flatter than before
Increased shedding in the shower or on your pillow

Progression (for some women)

Noticeable widening of the parting
Hair becomes harder to style or volumise
Reduced ponytail thickness
Some women also experience facial hair growth alongside scalp hair loss

What's Happening in the Body

PCOS leads to raised levels of androgens (male hormones) in the body
These hormones convert to DHT, which miniaturises hair follicles
Hair spends less time in the growth phase, causing earlier shedding
Insulin resistance and chronic inflammation further disrupt healthy follicle function

Other Key Facts

1 in 10 women of reproductive age can be affected by the condition
Hair thinning is often accompanied by acne, irregular periods, or weight gain
Hair loss is non-scarring, meaning regrowth is possible
Some women only notice hair loss after stopping hormonal contraception

Commonly Reported Triggers

Several internal and external triggers can worsen PCOS-related shedding:

Elevated androgen levels (especially DHT)
Insulin resistance
Stress and sleep disturbance
Crash diets or nutrient-poor eating habits
Stopping hormonal contraception
Nutritional deficiencies (iron, vitamin D, zinc, B12)

What Can Help?

PCOS hair loss is treatable. Depending on your symptoms and overall health, treatment might include:

Balanced, low-GI diet to improve insulin sensitivity
Regular exercise to reduce inflammation and support hormones
Sufficient intake of iron, vitamin D, zinc, and protein
Sulphate-free, volumising shampoos and gentle scalp care
Scalp massage to stimulate blood flow
Topical treatments and trichologically formulated products

Hair loss is one of the most emotionally difficult symptoms of PCOS, but it's also one of the most treatable. With the right combination of medical support, lifestyle changes, and hair-specific care, we see many women successfully slow down shedding and achieve noticeable regrowth.

What to Expect

Hair thinning from PCOS is gradual, but with consistent treatment, many women see improvement in hair volume and thickness, reduced shedding, and restored confidence. Initial regrowth may begin within 3 to 6 months, with full recovery expected in 9 to 12 months.

Can PCOS Hair Loss be reversed?

The good news is that PCOS-related hair loss is usually non-scarring, meaning the hair follicles are still alive and capable of regrowth. With proper treatment, many women can expect to see their hair improve over time. Early intervention gives you the best chance of regrowth and long-term improvement.

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Trichologist

Gary Heron

With over 40 years' experience diagnosing and treating hair loss conditions, Gary has helped thousands of patients understand their condition and find the right treatment path.