Insulin Resistance Explained Simply
What Is Insulin Resistance?
Insulin resistance is one of those terms many people have heard but few feel they truly understand.
There is so much conversation online about insulin resistance being the driver behind weight gain, low energy, and metabolic health problems. But in clinic, I often find that people are living with it long before anyone explains what is actually happening.
Insulin is a hormone that helps move glucose into your cells to be used as energy. I often describe it as a key that unlocks the door so energy can enter.
With insulin resistance, that process becomes less efficient. The key is still there, but the lock is no longer responding well. Your body compensates by producing more insulin to keep blood sugar stable.
Over time, this begins to affect:
energy levels
appetite
weight regulation
hormone balance
Often the first sign is not dramatic weight gain but simply feeling less steady in your energy or cravings than you used to.
Common Signs I See in Clinic
Many people experience symptoms for years before a metabolic diagnosis is ever made. The symptoms often feel unrelated, which is why they are easy to overlook.
Common patterns include:
fatigue after meals
sugar cravings
difficulty losing weight
weight gain around the abdomen
brain fog
skin changes
irregular menstrual cycles
And then there is that familiar afternoon moment. Around 3 or 4 pm, energy drops, concentration fades, and suddenly something sweet feels essential just to keep going or get through the day.
These patterns are not about lack of discipline. They are often signs that blood sugar regulation is struggling.
Why It Matters for Hormones
Insulin and hormones are closely connected in both men and women. Because I work mainly with women, I often see insulin resistance sitting quietly underneath issues like PCOS or worsening perimenopause and menopause symptoms.
A common conversation in clinic goes something like this:
“I don’t handle alcohol the way I used to.”
Often this reflects changing metabolic flexibility. Sugar in a glass of wine, combined with shifting hormones, can worsen blood sugar swings and make insulin resistance more challenging to manage over time.
When insulin levels remain persistently high, it can contribute to:
worsening PCOS symptoms
increased androgen levels
disrupted ovulation
more significant menopause symptoms
This is why metabolic health sits at the centre of hormonal health.
Emerging research is increasingly supporting combined approaches that address both hormones and metabolism together. In practice, whether I am supporting someone with PCOS, endometriosis, or menopause, improving blood sugar stability is almost always part of the plan.
What Actually Helps Improve Insulin Sensitivity
The good news is that small, consistent strategies make a real difference.
In clinic, we often focus on:
prioritising protein at meals, aiming for balance rather than extremes. Around 30 grams per meal is often a helpful starting point, adjusted to the individual
reducing highly processed carbohydrates, which quickly spike blood sugar
building muscle through simple resistance training, whether that is Pilates or basic weights at home or working with a personal trainer
walking for 10 to 15 minutes after meals when possible
improving sleep quality, because poor sleep directly affects insulin regulation
managing stress, since stress hormones and insulin are closely linked
Sometimes medication support is appropriate, but lifestyle foundations remain essential.
The goal is never perfection. It is consistency. Progress with insulin resistance happens gradually, and the body responds best to steady, repeatable habits over time.
Key Takeaway
Insulin resistance is not a failure or a lack of willpower. It is physiology.
Once people understand what is happening inside their body, everything starts to make more sense. And that understanding is often the first step towards lasting change.
