Insulin Resistance After 50: Why Belly Fat, Hunger & Blood Sugar Change

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By Helen Chow, ND, Dip Herb, UK-qualified Naturopath & Herbalist
Nutrition & Food Design Coach, Designer Realities Mind Coach
Originally published August 28, 2018. Reviewed & Updated: October 6, 2026

Have you reached your 50s and wondered why your body suddenly seems to be playing by a different set of rules?

Perhaps your waist has become thicker even though your weight has not changed dramatically. Perhaps you become hungry sooner than you used to, feel sleepy after certain meals, or find that the weight-loss eating plan that worked beautifully at 35 barely moves the scales now.

It is tempting to blame age, menopause or a “slow metabolism”.

But there may be another piece of the puzzle worth understanding: insulin resistance.

It is not something to panic about, and it certainly does not mean that every woman carrying a little extra weight around her middle has diabetes. Insulin resistance can exist long before diabetes develops, and it is influenced by far more than body weight alone.

Understanding it, however, can completely change the way you approach fat loss and metabolic health after 50.

If you have not already read it, begin with our Health Sifu cornerstone article on Metabolic Health After 50: Why Weight Changes and How to Lose Fat Without Losing Muscle. This article takes the next step and looks specifically at insulin, abdominal fat and blood sugar.

What does insulin actually do?

Insulin is a hormone made by your pancreas.

After you eat, particularly when a meal contains carbohydrate, some of the food is broken down into glucose. Glucose enters your bloodstream and can then be used by your cells for energy.

Insulin acts rather like a signalling key. It tells muscle, liver and fat cells that glucose is available and helps regulate what happens to that energy.

With insulin resistance, the cells become less responsive to the signals of insulin. The pancreas may compensate by producing more insulin in an attempt to keep blood glucose within a healthy range.

For a while, therefore, blood glucose can still appear perfectly respectable. And this is one reason insulin resistance can develop quietly: a normal glucose result does not necessarily tell the whole metabolic story. I explore this further in my Health Sifu guide to normal blood sugar and insulin resistance after 50.

Insulin resistance is not the same as diabetes

This distinction is important: Having insulin resistance does not automatically mean that you have diabetes.

When the body can still produce enough insulin to compensate for reduced insulin sensitivity, blood glucose may remain within the normal range.

If the system becomes progressively less able to compensate, blood glucose may rise into the prediabetes range and eventually, in some people, into the type 2 diabetes range.

And here is another important point:
You cannot diagnose insulin resistance by looking at your tummy, reading a list of symptoms on the internet or deciding that you feel tired after lunch.

Many possible “symptoms” are vague and can have numerous causes. Proper assessment matters.

Why can this become more relevant after 50?

Midlife brings several changes together at once.

1. Fat distribution often changes after menopause

Before menopause, women typically store proportionately more fat around the hips and thighs. However, as oestrogen levels decline, fat distribution commonly shifts towards the abdomen.

That does not mean menopause suddenly “makes you fat”. Ageing, activity, sleep, food intake, genetics and muscle loss all contribute.

But hormonal changes do appear to influence where fat is stored.

2. We gradually lose muscle unless we actively protect it

Muscle is not merely something that makes your arms and legs look toned. It is a metabolically active tissue and an important site for glucose disposal.

With age, particularly if we are inactive, muscle mass tends to decline. That is one reason Health Sifu places so much emphasis on maintaining muscle rather than simply pursuing a lower number on the bathroom scales.

Read our Health Sifu guide to Muscle Health After 50: How to Stay Strong, Protect Your Bones & Keep Your Independence.

3. Sleep time and sleep quality often deteriorate

Hot flushes, caregiving responsibilities, work, worry, ageing parents, relationship changes and simply having too much going on can all disturb sleep during this stage of life.

Poor sleep can influence appetite, food choices and glucose regulation.

This matters enormously for women in the sandwich generation because metabolic health does not occur in a laboratory. It happens while you are answering messages, helping Mum, sorting out somebody else’s crisis and wondering when you get a moment for yourself.

4. Stress can alter behaviour as well as physiology

Stress does not magically manufacture body fat out of nowhere.

But prolonged stress can affect sleep, appetite, eating behaviour and activity, while stress hormones can also affect glucose regulation.

That is why simply telling an exhausted woman to “eat less and exercise more” is often spectacularly unhelpful.

Our Health Sifu article on creating a less stressful life explores the other side of this equation.

Belly fat: The fat we need to understand

Not all abdominal fat is identical.

Subcutaneous fat sits beneath your skin. It is the softer fat you can pinch.

Visceral fat lies deeper inside the abdominal cavity around internal organs.

Woman over 50 measuring her waist as part of monitoring metabolic health — Waist measurement can provide useful information alongside other metabolic-health markers.

Some visceral fat is normal. The concern is excessive accumulation.

Higher amounts of visceral fat are associated with poorer cardiometabolic health, including increased risk of type 2 diabetes, high blood pressure and cardiovascular disease.

This is also why BMI (Body Mass Index) should never be the only piece of information used to judge someone’s metabolic health.

You can be relatively light and carry too much visceral fat. You can also be heavier, muscular and metabolically healthy. Context matters.

Should you measure your waist?

It can be useful.

A tape measure will not diagnose insulin resistance, but changes in waist size can provide another piece of information alongside blood pressure, blood tests, weight, muscle mass and how you feel.

The objective is not to become obsessed with centimetres. Think of waist measurement as information, not judgement.

What are the possible clues?

Insulin resistance often causes no obvious symptoms, particularly early on.

Nevertheless, it may be worth discussing metabolic testing with your healthcare professional if you notice changes such as:

a steadily increasing waist measurement
unexplained changes in blood glucose
increasing blood pressure or triglycerides
a strong family history of type 2 diabetes
previous gestational diabetes
pronounced post-menopausal abdominal weight gain
persistent difficulty managing weight despite reasonable lifestyle habits

Tiredness, cravings, hunger and feeling sleepy after meals can occur for many reasons, so they should not be treated as proof of insulin resistance.

Know your numbers

For many women, the most empowering thing is simply to stop guessing.

Depending on your personal history and risk factors, your GP or healthcare professional may consider measurements such as:

HbA1c
fasting blood glucose
blood pressure
triglycerides and cholesterol
waist measurement
liver-related blood tests where clinically appropriate

HbA1c gives an indication of average blood glucose over the preceding few months. It is widely used in assessing pre-diabetes and diabetes. If your numbers are confusing, my guide to Prediabetes After 50: What Your HbA1c and Blood Sugar Numbers Really Mean. explains what HbA1c, fasting glucose and the different ranges actually mean.

Insulin measurements sometimes appear in private metabolic testing, but there is no single routinely used blood test that, on its own, diagnoses “insulin resistance” in the way that many social-media posts imply.

Now for the good news: Your metabolism is not frozen in time

This is where I want women over 50 to feel encouraged rather than frightened.

Your metabolism is responsive
Muscle responds to resistance training
Insulin sensitivity can improve
Waist circumference can change
Sleep can improve
Eating patterns can change
Fitness can improve
Blood glucose can improve

And none of those things requires you to spend the rest of your life hungry. The objective is not punishment. It is to create a metabolic environment that works better.

1. Build your meals around good protein

After 50, losing weight while losing substantial amounts of muscle is not a victory.

Protein supports the maintenance and rebuilding of muscle, and protein-containing meals are generally satisfying.

Chicken breast with colourful vegetables as a protein-rich meal — Building meals around a substantial protein source can support muscle and satiety after 50.

Depending on your preferences, useful protein foods can include:

eggs
fish
poultry
meat
Greek yoghurt or other high-protein dairy foods
tofu or tempeh
beans and lentils
other protein-rich foods that suit your individual digestion and dietary pattern

Pair protein with vegetables and other minimally processed foods that suit you.

The intention is not to consume mountains of protein. It is to stop treating protein as the tiny decorative piece sitting beside a plate dominated by refined carbohydrate.

For more on the Health Sifu approach, read Common Sense Weight Loss Tips.

2. Become more selective about carbohydrate quality

Carbohydrate is not a poisonous substance. But neither are all carbohydrate foods metabolically equivalent.

A bowl of vegetables, berries or beans is very different nutritionally from a bottle of fizzy drink, a packet of biscuits or a large portion of highly refined snack food.

For many people, a useful starting point is to reduce:

sugar-sweetened drinks
sweets and confectionery
pastries and biscuits
highly refined snack foods
habitual large portions of refined starches

and build more meals from real, recognisable food.

There is no single diet that is appropriate for every woman.

Low-carbohydrate, Mediterranean-style, energy-reduced and other dietary approaches can all be useful in appropriate circumstances. The best eating pattern is one that improves health, supplies adequate nutrition and can actually be sustained.

3. Stop treating muscle as optional

One of the greatest mistakes women can make after 50 is to diet aggressively while doing nothing to protect muscle.

Resistance training gives your body a reason to retain and build metabolically useful tissue.

Woman over 50 strength training with dumbbells — Protecting muscle becomes increasingly important for metabolic health, strength and healthy ageing.

You do not need to become a bodybuilder: Dumbbells, resistance bands, body-weight exercises and appropriately loaded gym machines can all work.

Two or three well-designed strength sessions each week can transform what “losing weight” means: rather than merely becoming a smaller version of yourself, the aim becomes losing excess fat while protecting strength and function.

That is a very different goal.

4. Take a walk after eating

This is possibly the least glamorous metabolic-health strategy in the world. It is also wonderfully practical:

You eat
You get up
You walk
Your working muscles use glucose

Woman over 50 and her partner walking outdoors together — Even a short walk after eating is a simple way to add movement to your day.

It does not require an app, expensive equipment or an exotic supplement.

Even a short walk counts. You do not need to dismiss it simply because it is not a full workout. Diabetes UK supports breaking up sitting with short walks and notes that walking before or after meals can be useful.

It most certainly counts!

5. Reduce the constant grazing habit

This does not mean everybody needs intermittent fasting. It does mean that many of us have drifted from eating meals into eating almost continuously:

Coffee with something: A biscuit. A little snack.
Lunch: A sweet bite. Another coffee.
Something while preparing dinner: Dinner.
Something in front of the television.

Sometimes improving eating structure is surprisingly powerful because it forces us to distinguish a meal from background eating.

A sensible structure of satisfying meals can be easier to live with than spending all day trying to “be good” while constantly negotiating with food.

If you take insulin or glucose-lowering medication, however, do not radically change meal timing or carbohydrate intake without discussing it with your healthcare team. Medication requirements can change when food intake and activity change.

6. Protect your sleep

Sleep is part of metabolic health. It is not the reward you receive after you have finished doing everything for everybody else.

Persistent inadequate sleep can make appetite regulation, exercise and good food choices considerably harder.

If you are waking repeatedly because of menopausal symptoms, pain, snoring, suspected sleep apnoea or another health problem, it is worth addressing the cause with appropriate help rather than simply accepting exhaustion as part of getting older.

7. Design a strategy that survives real life

This may be the most important one.

A perfect metabolic-health routine that you can follow for four days is less valuable than a good routine you can live with for four years.

If you are caring for ageing parents, working, travelling, dealing with family emergencies and trying to create your own next chapter, your plan must function inside that life.

That might mean:

a five-minute breakfast rather than an elaborate recipe
frozen portions of nourishing meals
dumbbells at home rather than a complicated gym programme
ten minutes of walking after dinner
a “good enough” meal when life becomes chaotic
returning to your routine at the next opportunity instead of declaring the entire week ruined

That is consistency. And consistency is far more powerful than perfection.

What about prediabetes and type 2 diabetes?

If tests show prediabetes or type 2 diabetes, take it seriously — but do not assume that your future has already been written.

Lifestyle changes, appropriate weight loss where needed, physical activity and medical treatment can substantially improve metabolic health.

For some people with type 2 diabetes, remission is possible. Remission is the appropriate term rather than “cure”. Blood glucose can rise again, so ongoing monitoring remains important. I explore this in much more detail in Can Type 2 Diabetes Go Into Remission? What That Really Means After 50.

If you already have diabetes, never discontinue medication because your numbers improve without discussing it with your healthcare professional.

Start with a simple metabolic reset…

You don’t have to change twenty things tomorrow morning. Start here:

At your meals: prioritise protein and whole foods
After a meal: take a short walk when you can
Twice or three times each week: challenge your muscles
At night: protect your sleeping hours
During stressful weeks: simplify rather than abandon your plan
Occasionally: measure what matters — your waist, strength, fitness and appropriate health markers – rather than relying solely on the bathroom scales

That is a much more intelligent way to approach metabolic health after 50.

**The bigger Health Sifu picture**

This is exactly why weight loss after 50 cannot simply be about eating fewer calories until the scales move.

We are interested in what your body will be capable of ten and twenty years from now.

Can you maintain muscle?
Can you remain strong?
Can you protect your blood glucose?
Can you reduce excess visceral fat?
Can you move comfortably?
Can you maintain independence?
Can you create an eating pattern you genuinely enjoy?

And perhaps most importantly:

Can you build a way of living that makes you excited about the years ahead rather than permanently putting your life on hold until you have lost another five kilos?

That is the philosophy behind Health Sifu and Reclaim.

The aim is not simply a smaller body. It is a stronger, healthier woman with a future she wants to live.

Health Sifu Note

This article is for education and is not a diagnosis or substitute for individual medical care. If you have symptoms, abnormal blood glucose results, diabetes or take medicines that affect blood glucose, discuss significant dietary, fasting or exercise changes with your GP or diabetes healthcare team.