Have you ever felt hungry shortly after eating?
Or struggled with sugar cravings, gained weight around your middle or found it increasingly difficult to lose weight despite your best efforts?
Many people assume these changes are simply part of getting older, approaching menopause or having a “slow metabolism”.
In reality, they may be signs of insulin resistance.
Insulin resistance is one of the most common metabolic health problems seen today. It is increasingly recognised as a major contributor to weight gain, PMOS, fertility difficulties, cardiovascular disease and type 2 diabetes. It can also influence hormone balance long before blood sugar levels become abnormal.
The encouraging news is that insulin resistance is often reversible. Understanding what it is, how it develops and what can be done about it is the first step towards improving both symptoms and long-term health.
What Is Insulin?
Insulin is a hormone produced by the pancreas that helps move glucose from the bloodstream into the body’s cells, where it can be used for energy.
After we eat, blood glucose levels rise and insulin is released. Insulin acts like a key, allowing glucose to enter the body’s cells.
When the body’s cells become less responsive to insulin, the pancreas compensates by producing more. This is known as insulin resistance.
At first, this works well and blood sugar levels often remain normal. However, over time, the body may need increasingly large amounts of insulin to achieve the same effect.
This is where problems begin.
Why Blood Sugar Tests Can Be Normal
One of the biggest misconceptions about insulin resistance is that it only matters once someone develops diabetes.
In reality, insulin resistance often develops years before blood glucose levels become abnormal.
Many people are told:
“Your blood sugar is normal.”
Whilst technically true, insulin levels may already be elevated and affecting metabolism, appetite regulation and hormone balance.
This is why symptoms can develop long before diabetes is diagnosed.
Early Signs of Insulin Resistance
The symptoms can be subtle initially and are often attributed to stress, ageing or hormonal changes.
Common signs include:
- Weight gain around the abdomen
- Sugar cravings
- Hunger shortly after meals
- Fatigue after eating
- Brain fog
- Reduced energy levels
- Difficulty losing weight
- Increased waist circumference
- Elevated triglycerides
- Prediabetes
Some people also develop physical signs including:
- Skin tags
- Darkened patches of skin around the neck, underarms or groin (acanthosis nigricans)
- Acne
- Oily skin
Not everyone experiences all of these symptoms.
Why Does Insulin Resistance Cause Weight Gain?
Insulin is often described as a storage hormone. It converts sugar to fat for storage within the body.
When insulin levels remain elevated, the body becomes more likely to store energy as fat and less likely to access stored fat for fuel.
This creates a frustrating cycle:
- Weight gain worsens insulin resistance
- Insulin resistance promotes further weight gain
Many people feel trapped in this cycle despite making genuine efforts to improve their diet and exercise habits.
This is one reason why weight management is often far more complex than simply “eating less and moving more”.
Insulin Resistance and Hormone Health
Insulin interacts closely with other hormones throughout the body.
In women, elevated insulin levels can influence:
- Ovarian function
- Testosterone production
- Ovulation
- Fertility
- Appetite regulation
- Inflammatory pathways
This is one reason insulin resistance can have such wide-ranging effects on overall wellbeing.
Insulin Resistance and PMOS
Insulin resistance is one of the central features of Polyendocrine Metabolic Ovarian Syndrome (PMOS).
High insulin levels stimulate the ovaries to produce excess testosterone, which can contribute to:
- Irregular periods
- Acne
- Excess facial hair
- Scalp hair thinning
- Fertility difficulties
Addressing insulin resistance is often an important part of PMOS management.
Insulin Resistance and Menopause
Insulin sensitivity often declines during perimenopause and menopause.
Changes in body composition, sleep quality and activity levels can all contribute. Metabolic fat (the stuff responsible for increased co-morbidity) is usually stored in the abdomen, around the vital organs.
This helps explain why many women experience:
- Weight gain around the middle
- Increased cravings
- Reduced energy
- Difficulty maintaining previous weight
Whilst HRT can be extremely beneficial for many menopausal symptoms, it does not eliminate the need to address metabolic health.
What Can You Do About Insulin Resistance?
The good news is that insulin resistance often responds remarkably well to lifestyle interventions.
Prioritise Protein
Protein helps regulate appetite, preserve muscle mass and reduce blood sugar fluctuations.
Many women are surprised by how much better they feel when they increase their protein intake.
Increase Fibre
Fibre slows digestion, improves satiety and supports a healthy gut microbiome.
Vegetables, legumes, nuts, seeds and whole grains are excellent sources.
Build Muscle
Muscle is one of the body’s most important tools for glucose regulation.
Resistance training improves insulin sensitivity and helps maintain metabolic health. It also helps support strong and healthy bones.
This becomes increasingly important during midlife as muscle mass and bone density naturally declines.
Move More
Regular movement improves insulin sensitivity by reducing glucose being stored as fat.
Walking after meals is particularly effective and often overlooked.
Improve Sleep
Poor sleep can worsen insulin resistance, increase hunger hormones – ghrelin – and make weight management significantly more challenging.
Manage Stress
Chronic stress can affect eating behaviours, sleep quality and metabolic function.
Finding sustainable ways to manage stress is an important part of improving overall health.
Can Weight Loss Improve Insulin Resistance?
For individuals carrying excess weight, even modest weight loss can produce meaningful improvements.
Losing as little as 5–10% of body weight may improve:
- Insulin sensitivity
- Blood pressure
- Cholesterol levels
- Blood glucose regulation
- PMOS symptoms
- Fertility outcomes
- Cardiovascular risk
Importantly, the goal is not simply weight loss. The goal is improved metabolic health.
Medical Weight Management Options
For some people, lifestyle changes alone are not enough.
This is particularly true when significant insulin resistance, obesity or hormonal changes are contributing to difficulties with appetite regulation and weight management.
Modern medications such as semaglutide (Wegovy®) and tirzepatide (Mounjaro®) have transformed the treatment of obesity and metabolic disease.
These medications work by:
- Reducing appetite
- Increasing feelings of fullness
- Slowing gastric emptying
- Supporting sustainable weight loss
In addition to helping people lose weight, they can improve insulin sensitivity and many other key markers of metabolic health.
When prescribed appropriately and combined with lifestyle support, these treatments can be a valuable tool for improving both weight and long-term health outcomes.
At Doghurst Clinic, we offer personalised medical weight management programmes that combine nutritional guidance, lifestyle support and evidence-based medical treatments where appropriate.
Key Takeaway
Insulin resistance is far more than a blood sugar problem.
It is a metabolic condition that can affect weight, hormones, fertility, PMOS, menopause symptoms and long-term health.
The good news is that it can often be improved through nutritional changes, increased physical activity, resistance training, better sleep and, where appropriate, evidence-based medical weight management treatments.
Recognising insulin resistance early provides an opportunity to improve both current symptoms and future health.
Related Articles
- What is Polyendocrine Metabolic Ovarian Syndrome (PMOS)?
- Why Your Hormones Might Not Be the Problem: Understanding Insulin, Cortisol and Metabolic Health
- PMDD Symptoms: Understanding Premenstrual Dysphoric Disorder
- The Estrobolome in Menopause: Why Gut Health Matters
Can you be insulin resistant without diabetes?
Yes. Insulin resistance often develops many years before diabetes is diagnosed.
Does insulin resistance affect hormones?
Yes. Insulin influences testosterone, ovarian function, appetite regulation, inflammation and metabolism.
Can menopause worsen insulin resistance?
Yes. Falling oestrogen levels, reduced muscle mass and changes in body composition can all contribute.
Does HRT cure insulin resistance?
No. HRT may improve insulin sensitivity in some women, but it is not a primary treatment for insulin resistance.
Is insulin resistance linked to PMOS?
Yes. Insulin resistance is one of the central features of PMOS and contributes to many of its symptoms.
Related service: If insulin resistance or appetite regulation is affecting your health, our medical weight management clinic offers doctor-led assessment, lifestyle support and treatment options where appropriate.