Can Men Have PCOS? Symptoms and Causes

Can men have PCOS? It is a question that arises more often than you might expect, particularly as awareness of hormonal conditions grows. Polycystic ovary syndrome is defined by the presence of ovaries, meaning cisgender men cannot develop it. However, men can experience hormonal imbalances that produce strikingly similar symptoms, including fatigue, weight gain, acne, and changes in body hair. Trans men who retain their ovaries may also meet the diagnostic criteria. This article explains what PCOS actually is, why men cannot be diagnosed with it, and which conditions may be responsible when men experience comparable symptoms.

Can men actually get PCOS?

Cisgender men cannot get PCOS because the diagnosis requires ovaries; trans men who retain their ovaries can, however, meet the diagnostic criteria and should be assessed accordingly.

Cisgender men cannot get polycystic ovary syndrome (PCOS), because the condition is defined by the presence of ovaries and the hormonal environment specific to people assigned female at birth. Trans men who retain their ovaries can, however, meet the diagnostic criteria for PCOS, and should be assessed and managed accordingly. PCOS stands for polycystic ovary syndrome, and its diagnostic criteria, as set out by the Rotterdam consensus and referenced in NICE Clinical Knowledge Summary (CKS) on polycystic ovary syndrome, require at least two of three features: irregular or absent ovulation, elevated androgens, and polycystic ovarian morphology on ultrasound.^[3][4] These criteria apply to people with ovaries, not to cisgender male anatomy.

That said, cisgender men can experience hormonal imbalances that produce symptoms superficially similar to those seen in PCOS, such as elevated oestrogen, reduced testosterone, or insulin resistance. These conditions are distinct diagnoses in their own right and require separate investigation and management. The overlap in symptoms can sometimes lead to confusion, particularly when men read about PCOS online and recognise features such as weight gain, fatigue, or changes in body hair.

Some researchers have explored whether male relatives of women with PCOS show a higher prevalence of metabolic and hormonal abnormalities, suggesting a possible shared genetic predisposition, though this remains observational evidence and does not mean cisgender men develop PCOS itself.^[6][7] The term is sometimes used loosely in non-clinical settings, which can cause misunderstanding. If a man is concerned about hormonal symptoms, the appropriate step is to speak to a GP, who can arrange relevant blood tests and refer to an endocrinologist if needed.

What is PCOS and why does it affect hormone balance?

PCOS disrupts hormonal signalling between the brain, pituitary, and ovaries, causing excess androgens, irregular cycles, and insulin resistance, affecting roughly one in ten people with ovaries of reproductive age in the UK.

PCOS is a common endocrine condition affecting people with ovaries, estimated to affect roughly one in ten people of reproductive age in the UK, according to NHS information.^[2][9] It is characterised by a disruption in the normal hormonal signalling between the brain, pituitary gland, and ovaries, leading to an excess of androgens (male-type hormones such as testosterone), irregular menstrual cycles, and often the development of multiple small follicles on the ovaries visible on ultrasound.

The underlying mechanism involves a combination of insulin resistance, elevated luteinising hormone (LH), and increased androgen production by the ovaries. Insulin resistance, which is present in a significant proportion of people with PCOS, causes the pancreas to produce more insulin. Elevated insulin levels then stimulate the ovaries to produce more androgens, which in turn disrupt normal follicle development and ovulation. This creates a self-reinforcing cycle that sustains the hormonal imbalance. The pathophysiology is multifactorial and varies between individuals.

Androgens are present in everyone, regardless of sex, but in PCOS they are produced in excess relative to oestrogen, causing symptoms such as acne, excess facial or body hair (hirsutism), and scalp hair thinning. The metabolic consequences, including an increased risk of type 2 diabetes and cardiovascular disease, are documented in NICE CKS guidance on polycystic ovary syndrome.^[1][12] Understanding this hormonal mechanism helps explain why cisgender men with their own hormonal conditions may present with overlapping symptoms, even though the underlying diagnosis and anatomy are entirely different.

What symptoms in men might suggest a PCOS-like condition?

Men with PCOS-like symptoms such as weight gain, fatigue, or gynaecomastia are most likely experiencing hypogonadism, insulin resistance, or another distinct hormonal condition requiring separate investigation.

Cisgender men who experience symptoms that resemble those associated with PCOS are most likely dealing with a separate hormonal or metabolic condition that warrants its own investigation. Symptoms that may prompt concern include unexplained weight gain (particularly around the abdomen), fatigue, reduced libido, erectile dysfunction, gynaecomastia (breast tissue enlargement), thinning scalp hair, acne, or mood changes. These can all reflect an underlying imbalance in sex hormones or metabolic function.

One of the most relevant conditions in men is hypogonadism, where the testes produce insufficient testosterone. This can be primary (originating in the testes) or secondary (originating in the pituitary or hypothalamus), as described in NICE CKS guidance on testosterone deficiency.^[1] Elevated oestrogen relative to testosterone, sometimes caused by obesity-related conversion of androgens to oestrogen in fatty tissue, can produce symptoms that superficially mirror the androgen-excess picture seen in PCOS but in reverse. Insulin resistance and metabolic syndrome are also common in men and share features with the metabolic profile of PCOS.

Other conditions to consider include hyperprolactinaemia (elevated prolactin, which can suppress testosterone), thyroid dysfunction, and adrenal disorders such as congenital adrenal hyperplasia, which can affect androgen levels in both sexes.^[13][14] Men should not attempt to self-diagnose based on PCOS literature, as the diagnostic criteria and treatment pathways differ substantially.

Certain symptoms warrant prompt or urgent assessment. A new breast lump or nipple discharge should be reviewed urgently by a GP. A testicular mass requires urgent assessment to exclude malignancy. Severe headache with visual disturbance may suggest a pituitary mass and warrants same-day assessment. Excessive thirst and frequent urination alongside other symptoms may indicate hyperglycaemia and should be assessed promptly. A GP is the right first point of contact for any of these concerns, and referral to an endocrinologist or urologist may follow depending on initial findings.

How are hormone imbalances like PCOS diagnosed and treated in men?

Hormonal imbalances in men are diagnosed via blood tests including testosterone, LH, FSH, and prolactin, with treatment depending on the underlying cause, ranging from testosterone replacement to lifestyle modification or specialist medication.

Hormonal imbalances in men are diagnosed through a combination of clinical assessment and targeted blood tests, typically arranged by a GP. Relevant investigations may include total and free testosterone, sex hormone-binding globulin (SHBG), luteinising hormone (LH), follicle-stimulating hormone (FSH), prolactin, oestradiol, thyroid function tests, fasting glucose, and HbA1c. In line with NICE CKS guidance on testosterone deficiency, total testosterone should ideally be measured in the morning on at least two separate occasions, with SHBG used to calculate free testosterone where clinically indicated. The specific panel will depend on the presenting symptoms and the GP's clinical judgement.

Treatment depends entirely on the underlying diagnosis. Hypogonadism may be managed with testosterone replacement therapy where clinically appropriate, prescribed and monitored by an endocrinologist or specialist. Insulin resistance and metabolic syndrome are typically addressed through lifestyle modification, including dietary changes and increased physical activity, and in some cases medication. Metformin is licensed for type 2 diabetes and is sometimes used off-label in related metabolic conditions; any such off-label use should be initiated and supervised by a specialist, with informed patient consent and in accordance with local protocol.^[16][17] Elevated prolactin caused by a pituitary adenoma may be treated with dopamine agonists such as cabergoline, under specialist endocrine supervision in line with Society for Endocrinology guidance on prolactinoma management.

For men concerned about hormonal symptoms, accessing a structured clinical assessment is important. Bolt Pharmacy is a GPhC-registered UK online pharmacy offering online consultations with prescriber review and pharmacist support, which may be one route to initial assessment alongside NHS pathways. Men should contact their GP in the first instance, and seek advice from NHS 111 if symptoms are urgent but not life-threatening. Any man experiencing chest pain, severe abdominal pain, or sudden neurological symptoms should call 999 immediately. Suspected adverse effects from any prescribed medication can be reported via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk.

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