Book Now

Private GP Practice

PCOS and heavy periods: What’s really going on and what can you do about it?

If your periods are irregular, heavy, or painful or you have been diagnosed with PCOS, you have probably been given a prescription and sent on your way. But symptoms like these are rarely random. They are your body signalling that something deeper is out of balance.

Polycystic Ovarian Syndrome (PCOS) and heavy menstrual bleeding are increasingly common among women in the UK, particularly those balancing demanding careers and busy lifestyles. PCOS affects up to 1 in 10 women of reproductive age and is one of the leading causes of hormonal imbalance and irregular cycles.[1] Heavy periods, often dismissed as “normal”, can significantly impact your quality of life and are frequently linked to underlying hormonal and metabolic dysfunction.[2]

What is PCOS?

Despite the name, PCOS is far more than an ovarian condition. It is a systemic hormonal and metabolic disorder that can affect your skin, weight, energy, mood and fertility. The classic symptoms are well known:

  • Irregular or absent periods – Cycles that are unpredictable or skipped entirely
  • Acne and oily skin – Driven by elevated androgens
  • Excess hair growth -On the face, chest, or abdomen
  • Weight gain -Often concentrated around the abdomen
  • Fatigue and brain fog – Linked to blood sugar dysregulation
  • Fertility difficulties – Due to irregular or absent ovulation

If you recognise yourself in some of these, you are not alone – PCOS affects up to 1 in 10 women of reproductive age. These symptoms do not come out of nowhere. They are driven by underlying physiological imbalances that are treatable if you look for them.

Why does PCOS so often get missed?

Many women spend years living with PCOS without ever receiving a clear diagnosis. There are several reasons for this.

Symptoms look like other conditions

Fatigue, weight-gain and acne are easy to attribute to stress, diet or lifestyle. Without joining the dots, PCOS rarely comes up.

Standard testing has limits

A routine blood test or ultrasound can miss PCOS, particularly in women who are not overweight or who have regular but anovulatory cycles.

Periods are dismissed

Heavy, painful or irregular periods are still routinely described to patients as normal. That normalisation delays investigation and diagnosis by years.

No single test confirms it

PCOS is a clinical diagnosis based on a combination of signs and symptoms. Hurried appointments rarely allow for that depth of assessment.

Worth knowing: Research suggests it takes women an average of two years and multiple GP visits to receive a PCOS diagnosis. For many, it takes considerably longer.

The two root causes we look for first

Insulin Resistance

This is present in the majority of PCOS cases, including in women who are not overweight. When your cells stop responding well to insulin, your pancreas produces more of it. High insulin levels then trigger excess androgen production in the ovaries, disrupting ovulation and driving many of the symptoms listed above.

Why it matters: Left unaddressed, insulin resistance significantly raises your long-term risk of Type 2 Diabetes, cardiovascular disease, and worsening symptoms around perimenopause.

Chronic Stress

When you are running on adrenaline and cortisol for weeks or months at a time, your reproductive hormones are among the first things to suffer. Elevated cortisol disrupts the hormonal signalling that controls your cycle and amplifies inflammation throughout the body. If you are in a demanding job or going through a difficult time, this is worth taking seriously.

What about heavy periods?

Heavy menstrual bleeding is one of the most common reasons women seek help, yet it is still frequently dismissed by clinicians. In reality it is often a signal of hormonal dysregulation, and the contributing factors overlap heavily with PCOS.

  • Oestrogen dominance, meaning too much oestrogen relative to progesterone.
  • Low progesterone caused by irregular or absent ovulation.
  • Chronic inflammation affecting the uterine lining.
  • Gut health imbalances that disrupt how your body processes and excretes oestrogen.

Without addressing these root causes, the bleeding tends to continue or get heavier over time.

How Dr Finlay’s approach it differently

Traditional approaches rely on hormonal contraception or medication to suppress symptoms. For some women, that is appropriate in the short term. But, it does not explain why those symptoms appeared, and it does not prevent them from returning or evolving.

Our Functional Medicine approach starts with advanced testing to understand what is actually driving your symptoms.

GI Effects Test

Assesses gut microbiome balance and inflammation. The gut plays a direct role in how your body metabolises and clears oestrogen.

DUTCH Test

A detailed picture of your hormone levels and how they are being metabolised. Far more informative than a standard blood test.

Metabolomix+ Test

Evaluates nutritional status, oxidative stress, and mitochondrial function, all of which affect hormonal health.
From there, we build a personalised plan covering nutrition, lifestyle  and clinical support, designed to address what is driving your symptoms rather than simply quietening them.

What can you start doing now?

The evidence for lifestyle intervention in PCOS is strong. Small, consistent changes can make a meaningful difference, particularly when it comes to insulin resistance.

  • Prioritise whole, minimally processed foods to stabilise blood sugar throughout the day.
  • Move regularly. Even 20 to 30 minutes of walking improves insulin sensitivity over time.
  • Protect your sleep. Poor sleep worsens cortisol, blood sugar and hunger hormones simultaneously.
  • Track your cycles and symptoms. Patterns often reveal more than a single snapshot test.

The research is encouraging: Lifestyle and metabolic interventions targeting insulin resistance can significantly reduce PCOS symptoms and in many cases restore ovulation and cycle regularity.

You don’t have to navigate this alone

If you are experiencing PCOS, heavy periods, or ongoing hormonal symptoms, it can feel overwhelming, especially if you’ve been searching for answers for some time. Our team at Dr Finlay’s Private Practice is here to support you in understanding what’s going on in your body, and to help you move forward with a clear, personalised plan.

References:

We’re Here to Help

Our compassionate, experienced team is ready to support you today.

Contact Us