Insulin Resistance: Symptoms, Causes & How to Improve Insulin Sensitivity Naturally
Insulin Resistance: Symptoms, Causes & How to Improve Insulin Sensitivity Naturally
A practical Broth & Co guide to blood sugar balance, muscle, protein, gut health, bone broth and everyday metabolic wellbeing.
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Key takeaways Insulin resistance happens when cells become less responsive to insulin, making blood sugar harder to regulate over time. Food quality, protein-rich meals, fibre, muscle-building activity, walking, sleep, stress management, hydration and consistent routines can all support insulin sensitivity and everyday metabolic wellbeing. |
Struggling With Energy, Cravings or Weight Gain?
If you have noticed constant hunger, energy crashes, sugar cravings, difficulty losing weight, brain fog, increasing waist circumference or afternoon fatigue, insulin resistance may be part of the picture.
Insulin resistance is one of the most common patterns behind metabolic dysfunction. It often develops gradually over many years and may be present before blood glucose levels reach the diabetic range.
The encouraging news is that many people can improve insulin sensitivity through food, movement, sleep, stress management and sustainable daily habits. This does not require an extreme diet. It starts with practical foundations that can be repeated.
What Is Insulin Resistance?
Insulin is a hormone produced by the pancreas. Its role is to help move glucose from the bloodstream into cells, where it can be used for energy or stored for later use.
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Healthy insulin response |
Insulin resistance |
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Food is eaten and blood sugar rises. |
Cells become less responsive to insulin. |
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Insulin helps move glucose into cells. |
More insulin may be needed to manage the same meal. |
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Blood sugar returns toward baseline. |
Blood sugar and insulin patterns may become harder to regulate. |
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Energy feels steadier. |
Energy crashes, hunger and cravings may become more noticeable. |
Over time, insulin resistance may contribute to prediabetes, type 2 diabetes, cardiovascular risk, fatty liver, weight gain and metabolic syndrome. These are medical issues, so personalised care matters. For everyday wellbeing, the practical focus is improving the environment that cells live in: meals, movement, muscle, sleep and recovery.
Metabolic Health & Flexibility: Blood Sugar, Energy, Protein & Whole-Food Nutrition provides a wider overview of blood sugar and metabolic health.
The Blood Sugar Rollercoaster
Many people first notice insulin resistance as a pattern rather than a diagnosis. They may feel energised briefly after eating, then tired, hungry or foggy a few hours later. Afternoon cravings can become routine, and the day starts to revolve around caffeine, snacks or sugar.
Blood sugar naturally rises after eating. That is normal. The goal is not to prevent every rise in blood glucose. The goal is to build meals and routines that help the body respond well, use glucose efficiently and return to steadier energy.
Meals built mostly around refined carbohydrates tend to digest quickly and may leave some people hungry again sooner. Meals that combine protein, fibre, healthy fats and slower-digesting carbohydrates often feel more satisfying because they take longer to digest and provide a broader nutrient profile.
This is why a bowl with chicken, greens, avocado and sweet potato can feel very different from a sweet drink or plain pastry. Both provide energy, but the protein, fibre, fats and food structure change the way the meal feels in the body.
Common Symptoms of Insulin Resistance
Many people have insulin resistance without realising it. Symptoms can be subtle and overlap with other causes, which is why testing and professional advice are important when symptoms persist.
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Possible sign |
What it may feel like |
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Energy crashes |
Feeling tired after meals or needing caffeine to get through the day. |
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Sugar cravings |
Cravings that are strongest in the afternoon or evening. |
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Difficulty losing weight |
Often noticed around the abdomen. |
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Increased hunger |
Feeling hungry soon after eating. |
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Brain fog |
Difficulty concentrating or maintaining focus. |
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Mood fluctuations |
Energy and mood changing with meal timing or food choices. |
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Increasing waist circumference |
Abdominal fat is strongly associated with insulin resistance. |
What Causes Insulin Resistance?
Insulin resistance rarely develops because of one factor. It usually reflects a combination of diet quality, physical inactivity, sleep, stress, hormonal changes, genetics, body composition and time.
· Dietary patterns high in sugary drinks, refined carbohydrates and ultra-processed foods may contribute to metabolic dysfunction.
· Low physical activity reduces how often muscles use glucose.
· Poor sleep can influence appetite hormones, recovery and blood sugar regulation.
· Chronic stress can influence cortisol, appetite and blood sugar balance.
· Ageing, menopause and hormonal shifts may affect insulin sensitivity.
· Family history can increase susceptibility, but daily habits still matter.
Excessive Sugar & Ultra-Processed Foods explains why food quality matters.
Insulin Resistance Across Life Stages
Insulin sensitivity is relevant at every age, but the focus changes across life. In children and teenagers, the priority is growth, development, learning, sport, sleep and regular nourishment. Food patterns should support energy and development rather than weight-focused restriction.
In adults, insulin sensitivity is shaped by working patterns, sleep, stress, muscle mass, pregnancy history, hormones, activity levels and everyday food choices. Busy routines can make grazing and ultra-processed convenience foods more common, which is why simple meal structure can be so helpful.
In midlife and later life, protecting muscle becomes especially important. Menopause, ageing, reduced activity and changes in body composition can all influence insulin sensitivity. Protein-rich meals and resistance training become even more valuable because they help preserve the tissue that supports glucose use.
The message is not that everyone needs the same plan. It is that the foundations remain consistent: adequate protein, whole foods, fibre, movement, sleep, stress support and enough strength to use the energy you eat.
Testing and Professional Support
Symptoms can provide clues, but they cannot diagnose insulin resistance. Blood tests such as fasting glucose, fasting insulin, HbA1c, lipids and liver markers may help health professionals understand the bigger metabolic picture. Waist circumference, blood pressure, family history and body composition can also matter.
If symptoms are persistent, worsening or accompanied by strong thirst, frequent urination, unexplained weight change, fatigue or other concerns, it is sensible to speak with a health professional. Nutrition and lifestyle are powerful foundations, but they sit alongside appropriate medical care when needed.
Why Insulin Sensitivity Matters
Improving insulin sensitivity may support more stable energy, reduced cravings, metabolic flexibility, healthier body composition, better blood sugar control and long-term metabolic wellbeing.
Many people focus only on weight loss. A more useful goal is to improve the systems that make healthy weight management easier: satiety, muscle, meal structure, sleep and everyday movement.
Visceral Fat, Muscle & Metabolic Health: Why Where You Store Fat Matters explains why waist circumference and muscle matter together.
Muscle: Your Biggest Blood Sugar Organ
One of the most important concepts in metabolic health is that muscle acts as a glucose sink. After eating, muscles absorb glucose from the bloodstream and use it for energy or store it as glycogen.
The more metabolically active muscle you have, the better glucose disposal tends to be. This is why resistance training is strongly associated with improved insulin sensitivity. Muscle is not simply about strength or appearance; it is one of the body's most important metabolic organs.
This matters across life stages. Children and teenagers build muscle through growth, play and sport. Adults rely on muscle for work, training, energy and recovery. Older adults often need to protect muscle more deliberately to support mobility, independence and metabolic health.
Muscle, Metabolism & Lifelong Health: Why Muscle Matters at Every Age, Muscle as an Endocrine Organ: How Myokines Influence Metabolism, Inflammation & Healthy Ageing and Why Protein and Resistance Training Work Better Together explore this in more detail.
Metabolic Flexibility: Why It Matters
Healthy metabolism relies on the body's ability to switch between carbohydrates and fat for fuel. This is known as metabolic flexibility. Poor metabolic flexibility is often associated with constant hunger, energy crashes, blood sugar instability and difficulty losing weight.
Improving insulin sensitivity and building muscle help support this flexibility. So do protein-rich meals, fibre, sleep, daily movement, stress management and less frequent reliance on highly processed foods.
Metabolic Flexibility: The Key to Fat Burning, Energy, Healthy Ageing & Metabolic Health and The Gut-Mitochondria Connection: How Gut Health Influences Energy, Ageing & Metabolic Wellness connect this to energy and gut health.
Meal Order and Meal Structure
For some people, meal order can make a practical difference. Starting with protein and vegetables before moving to starchier carbohydrates may help slow the meal down and improve fullness. This does not need to become another strict rule. It can simply mean eating eggs before toast, chicken and salad before bread, or soup before a larger meal.
Meal structure matters too. Constant grazing can make it harder to notice true hunger and fullness. Many people do better with satisfying meals and planned snacks rather than small bites all day. A structured snack might be Greek yoghurt with berries, fruit with nuts, broth, boiled eggs or leftovers.
This approach is not about restriction. It is about giving the body clear nutrition signals: protein for satiety and muscle, fibre for gut health and fullness, fats for satisfaction, and carbohydrates in a form and amount that suit appetite and activity.
How to Improve Insulin Sensitivity Naturally
1. Prioritise Protein
Protein supports satiety, muscle maintenance, recovery and stable eating patterns. Helpful sources include fish, eggs, poultry, meat, legumes, Greek yoghurt, tofu, tempeh, bone broth and collagen-rich options where they fit.
Broth & Co Bone Broth provides approximately 5 g of naturally occurring protein per serve and can contribute to daily protein intake as part of a balanced diet.
High-Protein Foods: The Foundation of Muscle, Healthy Ageing & Recovery Nutrition, Protein, Satiety & Sustainable Nutrition and Amino Acids The Building Blocks explain protein in more detail.
2. Build Balanced Meals
Balanced meals usually include protein, fibre, healthy fats and whole-food carbohydrates. A simple example is salmon, vegetables, olive oil and sweet potato. Another is chicken and lentil soup made with bone broth.
A helpful plate structure is half colourful vegetables or salad, one quarter protein and one quarter fibre-rich carbohydrate, with healthy fats for flavour and satisfaction. This can be adjusted for appetite, activity, training, age and personal preference.
3. Reduce Ultra-Processed Foods
Ultra-processed foods are often highly refined, low in fibre and easy to overconsume. Replacing them with whole foods can improve dietary quality, satiety and meal satisfaction.
4. Improve Meal Timing
Many people benefit from structured meals, less grazing and fewer snack-like eating occasions. Allowing time between meals may help support appetite regulation and metabolic flexibility for some people.
5. Move After Meals
Even a 10-15 minute walk after eating may help support glucose disposal because active muscles absorb glucose directly from the bloodstream. This is one of the simplest habits to start.
6. Prioritise Sleep
Sleep influences insulin sensitivity, appetite hormones, energy and recovery. Consistent sleep habits are one of the most underrated metabolic health tools.
7. Build Muscle
Resistance training remains one of the most powerful tools for metabolic health. You do not need to spend hours in the gym. Walking, resistance bands, bodyweight exercises, Pilates, weights and active play can all support healthier muscles.
8. Manage Stress
Chronic stress influences cortisol, appetite and blood sugar. Walking, breathing exercises, meditation, time outdoors and social connection can all support a steadier routine.
A Practical Weekly Rhythm
Improving insulin sensitivity is easier when the weekly rhythm is simple. You do not need a perfect meal plan. You need a few repeatable anchors that make healthy choices easier on ordinary days.
· Prepare two or three protein options for the week, such as chicken, eggs, fish, tofu, lentils or yoghurt.
· Keep vegetables ready to add to meals, soups, omelettes and leftovers.
· Use bone broth as a warm drink, soup base, sauce starter or cooking liquid.
· Plan a few short walks after meals, especially after lunch or dinner.
· Include two or more strength sessions, even if they are short.
· Keep bedtime and wake time as consistent as possible.
Small actions compound. A 10-minute walk, a protein-rich breakfast, an earlier bedtime and a broth-based soup may not feel dramatic on their own, but repeated often they create a very different metabolic environment.

Why This Is Not a Low-Carb-Only Conversation
Some people with insulin resistance feel better with fewer refined carbohydrates, but that does not mean all carbohydrates are the problem. Legumes, oats, fruit, potatoes, whole grains and vegetables can all fit within a supportive pattern depending on the person, portion and meal context.
The most helpful question is often not whether a food contains carbohydrate, but what comes with it. Fibre, protein, healthy fats, meal timing, movement and the overall pattern all influence how a meal feels and how the body responds.
Where Bone Broth Fits
Bone broth is not a treatment for insulin resistance. It is a convenient whole-food option that provides naturally occurring protein, hydration, collagen-derived amino acids and savoury flavour.
Many people enjoy bone broth between meals, before meals, after exercise or as part of soups and meals. Powders and concentrates can make daily use simple, especially when cooking time is limited.
Bone Broth Benefits: The Complete Guide to Gut Health, Protein, Recovery & Healthy Ageing, Bone Broth Recipe: How to make & More and Functional Hydration give more practical context.
Where Skinny Glow Fits
BC Beauty Skinny Glow is a targeted collagen peptide product positioned for metabolic wellness as well as beauty-from-within. It includes Nextida GC, a specific collagen peptide ingredient studied for satiety and post-meal glucose response pathways when used as part of a healthy diet.
Many people choose to use Skinny Glow approximately 30 minutes before meals as part of a broader routine built on protein, fibre, muscle-supportive movement, whole foods and sleep.
Skinny Glow and Skinny Glow Beyond Beauty: Targeted Collagen Peptides for Metabolic Wellness provide product-specific context.
Supporting the Gut-Metabolism Connection
The gut and metabolism are closely connected. Gut microbes interact with fibre, bile acids, immune signalling, appetite pathways and energy metabolism. A gut-supportive routine can support the broader metabolic picture.
· Protein-rich meals.
· Fibre-rich foods.
· Vegetables and colourful plants.
· Hydration.
· Whole-food nutrition.
· Regular movement and sleep.
Daily Gut Health Routine: Simple Habits for Digestive Wellbeing, Energy & Microbiome Health, Metabolic Nutrition: Supporting Muscle Health, Satiety & Natural GLP-1 Responses Through Nutrition, The Gut-Brain Axis Explained and The Ozempic Effect with Food: GLP-1 Foods for Satiety, Appetite Control & Blood Sugar Balance explore related pathways.
Blood Sugar-Friendly Recipes
Morning Metabolic Broth

A simple savoury option before breakfast or during a busy morning.
Ingredients
· 1 cup Broth & Co Bone Broth
· Juice of 1/2 lemon
· Pinch sea salt
Method
1. Warm the bone broth gently.
2. Stir in lemon juice and sea salt.
3. Sip warm before breakfast or as part of your morning routine.
Balanced Blood Sugar Bowl
A simple protein, fibre and healthy fat meal.

Ingredients
· 150 g grilled chicken
· Mixed greens
· 1/2 avocado
· Roasted sweet potato
· Olive oil
Method
1. Arrange the mixed greens in a bowl.
2. Add grilled chicken and roasted sweet potato.
3. Top with avocado.
4. Drizzle with olive oil and serve.
Chicken and Vegetable Soup
A nourishing soup that combines broth, protein and vegetables.

Ingredients
· 1 litre bone broth
· 2 carrots
· 2 celery stalks
· 1 zucchini
· 2 cups shredded chicken
· Fresh parsley
Method
1. Warm the bone broth in a large saucepan.
2. Add carrots, celery and zucchini.
3. Simmer vegetables for 20 minutes or until tender.
4. Add shredded chicken and warm through.
5. Finish with fresh parsley and serve warm.
Protein and Fibre Smoothie
A quick smoothie with collagen peptides, berries, greens and chia seeds.

Ingredients
· 1 serve BC Beauty Healthy Glow
· 1 cup almond milk
· 1/2 cup berries
· 1 handful spinach
· 1 tablespoon chia seeds
Method
1. Add all ingredients to a blender.
2. Blend until smooth.
3. Serve immediately.
Healthy Glow and BC Beauty Healthy Glow: The Science of Beauty, Recovery, Mobility & Healthy Ageing provide more context for collagen peptide use.
Evening Ginger Broth
A warm savoury option for the evening.

Ingredients
· 1 cup bone broth
· Fresh grated ginger
Method
1. Warm the bone broth gently.
2. Stir in freshly grated ginger.
3. Sip slowly.
For more meal ideas, browse the collection of nourishing recipes.
Common Mistakes
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Mistake |
A better approach |
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Skipping protein |
Include protein at breakfast, lunch and dinner where possible. |
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Constant snacking |
Build satisfying meals and use structured snacks if needed. |
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Ignoring sleep |
Treat sleep as a core metabolic health habit. |
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Looking for quick fixes |
Focus on repeatable routines rather than extremes. |
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Avoiding strength training |
Use muscle as one of your greatest allies for blood sugar control. |
A Simple Daily Framework
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Time |
Focus |
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Morning |
Hydration, protein-rich breakfast and optional bone broth. |
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Lunch |
Protein, vegetables, healthy fats and fibre-rich carbohydrates. |
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Afternoon |
Walk after eating; choose a protein-rich snack if needed. |
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Evening |
Balanced meal, less grazing and a consistent sleep routine. |
Daily consistency matters far more than perfection.
Frequently Asked Questions
Can insulin resistance be reversed?
Many people can significantly improve insulin sensitivity through nutrition, physical activity, sleep and lifestyle changes. Individual results vary, and medical advice should be sought where appropriate.
What is the fastest way to improve insulin sensitivity?
Consistent improvements usually come from combining protein-rich meals, strength training, walking, better sleep and less frequent reliance on ultra-processed foods.
Does walking help insulin resistance?
Walking after meals can help active muscles absorb glucose from the bloodstream and may support healthier post-meal responses.
Can bone broth help insulin resistance?
Bone broth is not a treatment for insulin resistance. It provides naturally occurring protein, hydration and collagen-derived amino acids and can be included within balanced dietary patterns focused on metabolic health.
Why is muscle important for blood sugar control?
Muscle acts as a glucose sink, helping remove glucose from the bloodstream and supporting insulin sensitivity.
Does protein help with cravings?
Protein supports satiety and meal satisfaction, which may help some people manage hunger and cravings.
Is insulin resistance only about weight?
No. Body composition, muscle mass, sleep, stress, hormones, food quality, movement and genetics all play a role.
Summary
Insulin resistance is one of the most important patterns in modern metabolic health, but it is also highly responsive to daily habits for many people. Protein-rich meals, muscle-building activity, walking, better sleep, stress resilience, whole foods, hydration, gut health and consistent routines can all support insulin sensitivity and more stable everyday energy.
Mitochondrial Health: The Missing Link Between Energy, Ageing, Metabolism & Recovery and Chronic Inflammation Explained: Diet, Lifestyle, Gut Health & Everyday Wellbeing connect metabolic health with energy and inflammation.