Why Blood Sugar Regulation Matters More Than You Think

During my childhood and teenage years, I would feel such rage that only eating food would calm. It wasn’t until my early 20’s that I learned the term “hangry” which describes the very real biological phenomenon where a dip in blood glucose causes a corresponding drop in emotional control, triggering frustration, impatience, and mood swings.

Realising how blood sugar affected me, and growing up with a father who is type 1 diabetic, increased my fascination for how the human body works and ultimately has driven me to where I am today.

As a health coach, I see people struggling with symptoms such as afternoon energy crashes, intense sugar cravings, brain fog, mood swings, difficulty concentrating, and poor sleep. They assume these are "normal" and often is not the reason that they have come to me for support with their wellbeing. What many don't realise is that these symptoms are often linked to one foundational aspect of health: blood sugar regulation.

While blood sugar is often associated with diabetes, maintaining stable blood sugar levels is important for everyone. In fact, it plays a crucial role in our energy, mood, metabolism, hormone balance, and long-term health.

What Is Blood Sugar?

Blood sugar, or blood glucose, is the amount of glucose circulating in your bloodstream at any given time. Glucose is the body's primary source of energy and comes mainly from the carbohydrates we eat, such as fruits, vegetables, grains, legumes, and sugary foods.

Every cell in the body relies on glucose for fuel, particularly the brain, which consumes a significant amount of our daily energy. Because glucose is so important, the body has sophisticated systems in place to keep blood sugar within a healthy range.

How Does the Body Naturally Regulate Blood Sugar?

The body works continuously to maintain balance, a process known as homeostasis.

When we eat a meal containing carbohydrates, those carbohydrates are broken down into glucose, which enters the bloodstream. In response, the pancreas releases a hormone called insulin. Insulin acts like a key, helping glucose move from the bloodstream into the body's cells where it can be used for energy or stored for later use.

When blood sugar levels begin to drop between meals, another hormone called glucagon is released. Glucagon signals the liver to release stored glucose, ensuring the body has a steady supply of fuel.

Homeostasis - how the body regulates blood glucose using the hormones insulin and glucagon

In a healthy system, insulin and glucagon work together to keep blood sugar levels relatively stable throughout the day.

What Happens When Blood Sugar Isn't Regulated?

Problems arise when blood sugar repeatedly spikes and crashes. For example, eating a meal high in refined carbohydrates or sugar can cause blood glucose to rise rapidly. The body responds by releasing a large amount of insulin. In some cases, this can lead to blood sugar dropping quickly afterwards, resulting in what many people describe as an energy crash.

Common signs of unstable blood sugar include:

• Fatigue, especially after meals

• Afternoon energy slumps

• Strong cravings for sugary or carbohydrate-rich foods

• Brain fog and difficulty concentrating

• Irritability or mood swings

• Feeling shaky, anxious, or light-headed

• Frequent hunger, even shortly after eating

• Poor sleep quality

Over time, chronic blood sugar dysregulation can contribute to insulin resistance, weight gain, inflammation, hormonal imbalances, and an increased risk of developing type 2 diabetes and cardiovascular disease.

The good news is that there are many lifestyle strategies that can help support healthy blood sugar regulation which is where I come in to support people to embed these as every day habits.

How Diet Supports Blood Sugar Balance

The food we eat has the most immediate impact on blood sugar levels.

Prioritise Protein

Including protein at meals helps slow digestion and reduces rapid rises in blood sugar. Protein also promotes satiety, helping you stay fuller for longer.

Examples include:

• Eggs

• Fish

• Poultry

• Greek yoghurt

• Tofu and tempeh

• Beans and lentils

Include Healthy Fats

Healthy fats can help slow the absorption of carbohydrates and provide sustained energy.

Good sources include:

• Avocados

• Nuts and seeds

• Olive oil

• Oily fish

Focus on Fibre

Fibre acts like a natural buffer for blood sugar by slowing the release of glucose into the bloodstream.

Excellent sources include:

• Vegetables

• Fruits

• Legumes

• Whole grains

• Nuts and seeds

Build Balanced Meals

One of the simplest ways to support blood sugar regulation is to combine protein, fibre-rich carbohydrates, and healthy fats at each meal.

For example, instead of eating a plain bagel for breakfast, try eggs with wholegrain toast and avocado. The added protein and fat help create a steadier release of energy.

For more ways to get started, read my blog on adding food, not restricting

Reduce Refined Sugars and Ultra-Processed Foods

Foods that are high in sugar and refined carbohydrates can cause rapid blood sugar spikes. While enjoying these foods occasionally is part of a balanced lifestyle, making whole foods the foundation of your diet can significantly improve blood sugar stability.

The Connection Between Stress and Blood Sugar

Many people are surprised to learn that stress can impact blood sugar just as much as food.

When we're stressed, the body releases hormones such as cortisol and adrenaline. These hormones trigger the release of glucose into the bloodstream to prepare us for action - a natural survival mechanism often referred to as the "fight or flight" response.

The challenge is that modern stress is often chronic rather than temporary. Work deadlines, financial worries, lack of sleep, and constant stimulation can keep stress hormones elevated for extended periods.

Chronically elevated cortisol can contribute to higher blood sugar levels and make it more difficult for the body to respond effectively to insulin.

Supporting stress management can therefore have a meaningful impact on blood sugar regulating and one of the key pillars I support clients with. If you're struggling with managing your stress, read more here.

Helpful strategies include:

• Daily walks in nature

• Mindfulness or meditation

• Deep breathing exercises

• Quality sleep

• Setting healthy boundaries

• Taking regular breaks throughout the day

How Exercise Improves Blood Sugar Regulation

Physical activity is one of the most powerful tools for improving blood sugar control.

When muscles contract during exercise, they use glucose for fuel. This helps remove glucose from the bloodstream and improves the body's sensitivity to insulin.

Did you know that skeletal muscles regulate blood sugar by absorbing over 80% of post-meal glucose? 

Building muscle increases metabolism and supports blood glucose regulation by using glucose or storing excess carbohydrates to use later on. The benefits of exercise can occur immediately after exercise and accumulate over time, so try one of the following:

Walking After Meals

Even a 10–15-minute walk after eating can help reduce post-meal blood sugar spikes.

Strength Training

Building muscle increases the body's capacity to store and utilise glucose effectively. Resistance training has been shown to improve insulin sensitivity and support long-term metabolic health.

Cardiovascular Exercise

Activities such as cycling, swimming, jogging, and brisk walking help improve glucose uptake and overall cardiovascular health.

The key is consistency rather than perfection. Finding forms of movement, you genuinely enjoy is far more sustainable than following an exercise plan you dread. This is something I love exploring with my clients and it’s a joy to help them find an exercise they love.

Final Thoughts

Blood sugar regulation is one of the foundations for preventing disease but it’s also supports you to feel your best every day.

Stable blood sugar can support steady energy, better mood, fewer cravings, improved focus, balanced hormones, and long-term health. By focusing on balanced meals, managing stress, prioritising movement, and supporting healthy lifestyle habits, you can help your body and mind do what it was designed to do.

As a health coach, I often remind clients that small, consistent changes create the biggest results. You don't need a perfect diet or intense workout routine. Start with one habit; adding protein to breakfast, taking a short walk after meals, or creating a simple stress-management practice, and build from there.

If you're experiencing energy crashes, sugar cravings, brain fog, or difficulty maintaining a healthy weight, blood sugar imbalance may be playing a role. Working with a health coach can help you identify the lifestyle and nutrition strategies that best support your unique needs. Get in touch to learn how you can create sustainable habits that actually fit into your current lifestyle that support balanced blood sugar and long-term wellbeing.

Check out my private programmes here, or book a free exploratory chat to find out more.