Many women with polycystic ovary syndrome (PCOS) also have type 2 diabetes, with over half developing the condition by age 40. Understanding what links the two conditions is vital, as it can help you take care of your overall health, reduce long-term risks, and support your fertility journey.
In this blog, we’ll explore how PCOS and diabetes are connected, why it matters for fertility and pregnancy, and what you can do to manage your risk through lifestyle changes, medical support, and targeted supplements.
Understanding PCOS
PCOS is one of the most common hormonal disorders among women of reproductive age, affecting around 1 in 10 worldwide.
It’s characterised by a combination of symptoms and hormonal imbalances, particularly involving elevated androgens (male hormones) and disrupted insulin regulation.
Although many women (about half) don’t experience symptoms of PCOS, some common ones include:
- Irregular or absent periods
- Difficulty conceiving
- Persistent acne (especially along the jawline)
- Excess hair growth on the face, chest, or back (hirsutism)
- Hair thinning or loss on the scalp
- Unexplained weight gain, particularly around the abdomen
One of the main underlying factors in PCOS is insulin resistance, which affects a significant proportion of women with the condition. Around 65-70% of women diagnosed with PCOS have insulin-resistant PCOS, but it’s also a common feature in other types.
What is insulin resistance (and why does it matter)?
Insulin is a hormone that regulates glucose (sugar) levels, moving it into the cells for energy or storage. When you have insulin resistance, your cells become less responsive to insulin, meaning glucose stays in the bloodstream. In response, your pancreas produces even more insulin to try to regulate blood sugar levels.
Over time, this cycle of high insulin and elevated blood glucose can lead to several problems. Excess insulin stimulates the ovaries to produce more androgens, worsening PCOS symptoms such as irregular periods, acne, and excess hair growth. High insulin levels also make it harder to maintain a healthy weight and can increase the risk of developing prediabetes, type 2 diabetes, and cardiovascular disease.
The PCOS and diabetes connection
Insulin resistance is seen as the bridge between PCOS and type 2 diabetes. Research shows that insulin resistance is a prominent feature of PCOS, with a prevalence ranging from 35% to 80%, and women with PCOS are approximately four times more likely to develop type 2 diabetes compared to women without the condition. This risk is even higher for those who have a higher BMI, a family history of diabetes, or who belong to certain ethnic groups more predisposed to insulin resistance.
Beyond type 2 diabetes, women with PCOS are also at increased risk of prediabetes (a condition where blood sugar levels are elevated but not yet high enough for a diabetes diagnosis) and gestational diabetes during pregnancy. The longer insulin resistance remains unmanaged, the greater the likelihood of progressing from prediabetes to full type 2 diabetes.
Understanding metabolic syndrome
Women with PCOS are also at higher risk of developing metabolic syndrome, a cluster of conditions that occur together and significantly increase the risk of heart disease, stroke, and type 2 diabetes.
Metabolic syndrome is defined by having at least three of the following:
- Increased waist circumference
- Elevated blood pressure
- High blood sugar levels (indicating insulin resistance or prediabetes)
- High triglycerides (a type of fat in the blood)
- Low HDL (the good) cholesterol
The incidence of metabolic syndrome is higher in women with PCOS (47%) compared to the general population (34%), and this risk increases with age, particularly after menopause. Post-menopausal women with PCOS may face heightened cardiovascular risks due to the cumulative effects of insulin resistance, inflammation, and hormonal changes. Managing metabolic health proactively is therefore essential, not only for fertility but for your long-term wellbeing.
What does this connection mean for fertility and pregnancy?
The interplay between insulin resistance, PCOS, and diabetes has significant implications for fertility and pregnancy outcomes.
Insulin and blood sugar imbalances can disrupt ovulation, making it difficult to conceive. Even when ovulation does occur, high insulin levels and oxidative stress may affect egg quality, reducing the chances of successful fertilisation and healthy embryo development.
Elevated blood sugar and insulin levels can also impact the endometrium (the uterine lining), making it less receptive to implantation. This can lead to difficulties in achieving pregnancy or an increased risk of early pregnancy loss.
Beyond conception, women with PCOS face heightened risks during pregnancy, including gestational diabetes, pre-eclampsia (high blood pressure during pregnancy), preterm birth, and macrosomia (having a larger-than-average baby), which can complicate delivery.
The good news is that improving metabolic health before conception (through lifestyle changes, medical support, and supplements) can hugely benefit both fertility and maternal health during pregnancy. Taking proactive steps to manage insulin resistance and blood sugar levels can improve ovulation, enhance egg quality, and reduce pregnancy complications.
PCOS and gestational diabetes
Gestational diabetes is a form of diabetes that develops during pregnancy, typically in the second or third trimester. It happens when the body cannot produce enough insulin to meet the increased demands of pregnancy, leading to elevated blood sugar levels.
Women with PCOS are approximately 2.3 times more likely to develop gestational diabetes compared to women without PCOS. This increased risk is largely due to pre-existing insulin resistance, which becomes more pronounced during pregnancy due to hormonal changes.
Gestational diabetes can lead to complications for both mother and baby, including:
- An increased risk of pre-eclampsia
- Higher chance of needing a caesarean section
- Higher birth weight (macrosomia)
- Greater likelihood of the baby developing low blood sugar (hypoglycaemia) after birth
Women who develop gestational diabetes also have a higher risk of developing type 2 diabetes later in life.
Managing blood sugar levels before and during pregnancy is important. Early screening, regular monitoring, and working closely with healthcare providers can help reduce these risks and support a healthier pregnancy.
Managing the PCOS and diabetes risk
While the connection between PCOS and diabetes can feel overwhelming, there are many practical, effective steps you can take to manage your risk and support your overall health.
Lifestyle changes
Lifestyle changes are the first port of call for managing PCOS and reducing diabetes risk. A balanced, low-glycaemic PCOS diet that focuses on whole foods, lean proteins, healthy fats, and fibre-rich vegetables can help regulate blood sugar levels and reduce insulin spikes.
Regular physical activity, particularly a combination of aerobic exercise and strength training, improves insulin sensitivity and supports weight management. Stress management techniques such as mindfulness, yoga, or journaling can also help, as chronic stress can worsen insulin resistance.
Medical support
Medical support may include medications such as metformin, which improves insulin sensitivity and is commonly prescribed for women with PCOS.
Hormonal contraceptives can help regulate periods, while fertility medications may be recommended for those trying to conceive.
In some cases, GLP-1 receptor agonists (medications that help manage blood sugar and support weight management) may be prescribed, particularly for those at high risk of type 2 diabetes.ersistent symptoms with your doctor. Blood tests can help identify specific imbalances and guide you towards the most appropriate treatment.
Regular monitoring
Monitoring your health through regular blood tests is essential. The main tests include fasting glucose and HbA1c (to assess blood sugar control), testing insulin levels, and hormone panels (including testosterone, LH, FSH, and thyroid function). Frequent check-ups help you track your progress and adjust your treatment plan as needed.
Inofolic Alpha PCOS supplement
Alongside lifestyle changes and medical treatment, targeted PCOS supplements can provide additional support for managing your symptoms and improving your metabolic health.
Inofolic Alpha and Inofolic AlphaPlus (for women with a BMI over 25) are specialised supplements designed specifically for women with PCOS.
The formula contains a unique combination of myo-inositol and alpha-lactalbumin, which work together to address the root causes of PCOS. One of its key benefits is improving insulin sensitivity, helping your body use insulin more effectively and reducing the excess insulin that drives many PCOS symptoms. By improving insulin function, Inofolic Alpha can also support regular ovulation, hormonal balance, and overall metabolic health.
Alongside improving insulin resistance, Inofolic Alpha has been shown to help restore menstrual regularity, reduce androgen levels (which can alleviate symptoms like acne and excess hair growth), and support egg quality, making it a valuable tool for women trying to conceive.
As with all supplements, Inofolic Alpha works best when used as part of a broader approach that includes a balanced diet, regular exercise, stress management, and medical guidance. However, for women with PCOS looking to improve their metabolic health and fertility, Infolic Alpha offers much-needed, evidence-based support.
When to see a doctor
If you suspect you have PCOS, have been diagnosed with PCOS, or have a family history of diabetes, it’s important to get professional advice. Early detection and intervention can reduce your risk of developing type 2 diabetes and improve your fertility outcomes.
You should consider seeing a doctor if you:
- Experience Irregular or absent periods
- Are having difficulty conceiving
- Have symptoms of insulin resistance (such as darkened skin patches, particularly around the neck or armpits, known as acanthosis nigricans)
- Notice unexplained weight gain, especially around the abdomen
- Have a family history of PCOS, diabetes, or cardiovascular disease
Don’t wait until these symptoms become severe: proactive self-care is important, and remember, you don’t have to go through this journey alone.
Sources
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Centers for Disease Control and Prevention. Risk Factors for Polycystic Ovary Syndrome (PCOS). Atlanta: CDC; 2023 [updated 2023]. Available at: https://www.cdc.gov/diabetes/risk-factors/pcos-polycystic-ovary-syndrome.html
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