Understanding PCOS: Beyond Irregular Periods and Its Impact on Health

Polycystic ovary syndrome (PCOS) is a complex endocrine condition that affects multiple systems in the body. Hormonal imbalances—often involving elevated androgens and insulin resistance—can contribute to a range of effects, including metabolic changes, weight fluctuations, skin symptoms, and potential long-term health considerations.

Because PCOS presents differently in each individual—and may occur without visible ovarian cysts—management typically involves a comprehensive approach that considers hormonal, metabolic, and lifestyle factors.

The Hormonal Imbalance Behind PCOS

Polycystic ovary syndrome (PCOS) involves interactions between insulin resistance and androgen production. Insulin resistance may influence the ovaries to produce higher levels of androgens, which can, in turn, affect metabolic function.

In many individuals with PCOS:

• Luteinising hormone (LH) may be elevated relative to follicle-stimulating hormone (FSH), altering the signals needed for egg maturation and release
• The ovaries may contain multiple immature follicles, sometimes identified as “cysts,” although not all individuals have visible cysts
• Lower levels of sex hormone-binding globulin (SHBG) can result in higher circulating free testosterone, potentially intensifying symptoms even when total hormone levels appear within reference ranges

How PCOS Affects Body Weight and Metabolism

Insulin resistance is commonly associated with PCOS and may influence how the body processes glucose for energy. When cells respond less effectively to insulin, blood glucose regulation can be affected, which in some individuals may be associated with increased hunger or changes in food cravings.

Hormones involved in appetite regulation, such as ghrelin and leptin, may also be altered in PCOS. These changes can make weight management more challenging for some individuals.

The Insulin–Weight Connection

Elevated insulin levels may influence how the body stores and utilises energy. Insulin plays a role in fat storage, and persistently high levels may be associated with increased fat accumulation, particularly around the abdomen.
Abdominal fat tissue can produce inflammatory substances that may further affect insulin sensitivity and hormonal balance. However, the degree of metabolic impact varies between individuals with PCOS.

Appetite and Satiety Changes

In some individuals, insulin resistance may be associated with increased hunger or a preference for carbohydrate-rich foods. Alterations in hunger and fullness-signalling hormones may contribute to difficulty maintaining a consistent caloric balance.

It is important to note that not everyone with PCOS experiences significant weight changes, and body weight alone does not determine the presence or severity of the condition.

Skin and Hair Changes

Elevated androgen levels may contribute to changes in skin and hair patterns. These changes can sometimes appear before menstrual irregularities are recognised. The type and severity of symptoms vary between individuals.

Hirsutism Patterns

Excess hair growth (hirsutism) may occur in areas typically associated with male-pattern distribution, such as the upper lip, chin, chest, lower abdomen, and inner thighs. Hair may become thicker or darker over time. The severity ranges from mild to more noticeable growth requiring regular management.

Conversely, scalp hair may become thinner in some individuals, particularly around the crown or temples. This pattern is sometimes referred to as androgen-related hair thinning.

Acne and Oily Skin

Androgens can stimulate sebaceous (oil-producing) glands, increasing oil production. Acne associated with PCOS may appear along the jawline, chin, and lower face. In some individuals, it may persist beyond adolescence.

Some people with insulin resistance may develop acanthosis nigricans—darkened, velvety skin patches commonly found on the neck, underarms, or groin. This skin change is associated with metabolic factors rather than hygiene. Improvement may occur with better metabolic control.

? Did You Know?
Androgens can affect hair follicles differently depending on their location. While they may stimulate increased hair growth in some areas of the body, they may contribute to scalp hair thinning in others.

Reproductive and Fertility Implications

PCOS may affect ovulation, which can make conception less predictable. However, many individuals with PCOS are able to conceive, either naturally or with medical support. Management is typically tailored to the individual’s reproductive goals and overall health profile.

• Ovulatory Challenges: Inconsistent or absent ovulation can make it more difficult to determine fertile windows. Hormonal imbalances associated with PCOS may also influence egg maturation or the development of the uterine lining in some individuals. The extent of these effects varies.
• Fertility Management: Some individuals conceive naturally, particularly when lifestyle measures help support metabolic and hormonal balance. Others may consider ovulation-inducing medications or assisted reproductive techniques, depending on their medical assessment and reproductive goals. Treatment options are individualised based on a comprehensive evaluation by a qualified healthcare professional.
• Pregnancy Care: PCOS has been associated with a higher likelihood of certain pregnancy-related conditions, such as gestational diabetes and hypertensive disorders. However, risks differ between individuals. Pre-conception health optimisation and appropriate antenatal monitoring may help support maternal and fetal well-being throughout pregnancy.

Long-Term Health Considerations

PCOS may have health implications beyond the reproductive years. The metabolic features associated with the condition can be linked to an increased likelihood of certain long-term health concerns. The degree of risk varies between individuals and may be influenced by lifestyle, genetics, and overall health status.

Metabolic Syndrome and Diabetes

Insulin resistance and central fat distribution associated with PCOS may increase the likelihood of developing type 2 diabetes or metabolic syndrome. Metabolic syndrome refers to a cluster of factors, including elevated blood pressure, abnormal lipid levels, and impaired glucose regulation.

Periodic monitoring of fasting glucose and haemoglobin A1c (HbA1c) levels may be recommended to assess metabolic health. Early identification of changes allows for timely lifestyle modifications or medical management where appropriate.

Endometrial Health

In individuals with infrequent ovulation, the uterine lining may be exposed to oestrogen without regular progesterone influence. Over time, this may lead to thickening of the uterine lining (endometrial hyperplasia).

Regular menstrual regulation, whether occurring naturally or medically induced when appropriate, may be considered to support endometrial health. Management decisions are individualised based on symptoms, risk factors, and reproductive goals.

Management Approaches

PCOS management focuses on addressing hormonal, metabolic, and symptom-related concerns based on individual priorities. A healthcare professional can help establish specific goals and develop a personalised plan. Considerations may include whether fertility is an immediate objective and which symptoms most affect quality of life.

Movement and Exercise

Regular physical activity is associated with improved insulin sensitivity, even in the absence of significant weight change. Both aerobic exercise (such as walking, swimming, or cycling) and resistance training (such as weight training or bodyweight exercises) may provide metabolic benefits. A combination approach is often recommended.

Skeletal muscle plays a role in glucose uptake, and maintaining muscle mass may support metabolic health. Light activity, including walking after meals, may assist with post-meal glucose regulation.

Consistency is generally more important than exercise intensity. Moderate activity performed regularly may contribute to improved metabolic markers over time.

⚠️ Important Note
Highly restrictive dieting or rapid weight loss strategies may not be suitable for everyone and can, in some cases, affect hormonal balance. Sustainable, gradual approaches are typically preferred and should be guided by a healthcare professional.

Medical Treatment Options

Medical therapy is tailored to individual symptoms, metabolic status, and reproductive goals. A qualified healthcare professional will determine appropriate options based on clinical assessment.

• For menstrual regulation: Combined oral contraceptives or cyclic progesterone may be prescribed to support regular withdrawal bleeds and reduce the risk of endometrial overgrowth.
• For insulin resistance: Medications such as metformin, and in some cases inositol supplements, may be considered to support insulin sensitivity. Responses vary between individuals.
• For androgen-related symptoms: Certain medications may reduce the effects of androgens and help manage acne or excess hair growth. Visible changes, particularly in hair patterns, may take several months.
• For fertility support: Ovulation-inducing medications such as letrozole or clomiphene citrate may be prescribed to stimulate ovulation in individuals trying to conceive, following appropriate evaluation.

When to Seek Professional Help

Consider consulting a healthcare professional if you experience:

• Menstrual cycles occurring less frequently than every 35 days, or absence of periods for more than three months (if not pregnant)
• New, persistent, or worsening facial hair growth or acne beyond adolescence
• Gradual weight gain, particularly around the abdomen, without clear lifestyle changes
• Difficulty conceiving after a period of regular unprotected intercourse
• Darkened skin patches developing in body folds, such as the neck or underarms
• Symptoms suggestive of blood sugar imbalance, such as increased thirst, frequent urination, or persistent fatigue

Commonly Asked Questions

Can PCOS develop later in life, or does it always start at puberty?

PCOS typically begins around puberty, although symptoms may not be immediately recognised. In some cases, features become more noticeable later in life, particularly after stopping hormonal contraception. When signs of elevated androgens first appear in adulthood, further medical evaluation may be recommended to exclude other possible causes.

Will losing weight cure PCOS?

Weight reduction may improve certain symptoms and metabolic markers in overweight individuals. In some cases, even modest weight changes are associated with improved menstrual regularity or ovulation. However, PCOS is generally considered a long-term condition that may require ongoing management, regardless of body weight.

Is PCOS hereditary?

PCOS tends to run in families, suggesting a genetic component. However, no single gene has been identified as the sole cause. Having a close family member with PCOS may increase the likelihood, though environmental and lifestyle factors also play a role in how the condition manifests.

Can I take supplements instead of medication for PCOS?

Certain supplements, such as inositol or vitamin D (in individuals with deficiency), have been studied for their potential role in supporting metabolic or reproductive health. However, responses vary, and supplements are generally considered complementary to—not replacements for—lifestyle measures or prescribed medications when indicated. A healthcare professional can advise on appropriate options based on individual needs.

Does PCOS affect only overweight individuals?

PCOS occurs in individuals across all body weights. While insulin resistance is more commonly associated with higher body weight, lean individuals with PCOS may still experience menstrual irregularities or androgen-related symptoms. Management strategies are individualised and do not focus solely on weight.

Next Steps

Supporting blood glucose regulation through balanced nutrition and regular physical activity is often part of PCOS management. Medications may be considered based on individual symptoms, metabolic profile, and fertility goals. Early medical evaluation allows for appropriate monitoring and tailored management over time.

If you are experiencing irregular periods, unexplained weight changes, excess facial or body hair, or persistent acne, a consultation with our obstetrician and gynaecologist can help determine whether further hormonal assessment is appropriate and discuss suitable management options.