We all know the feeling: after a busy morning, you suddenly feel an energy slump, or you automatically reach for something sweet around three o'clock in the afternoon. This is often due to your blood sugar level. Stable blood sugar is essential for constant energy, a clear head and a good mood. In this article, you can read about what your blood sugar is exactly, what can cause it to become unbalanced and how you can keep it stable in a natural way.

In this article, you can read about:

  • What your blood sugar level is
  • What causes unstable blood sugar
  • The effect of your blood sugar on your energy levels
  • Symptoms of irregular blood sugar
  • Practical tips for keeping your blood sugar stable
  • Vitamins and minerals for stable blood sugar
  •  

What is your blood sugar level?

Your blood sugar level reflects the amount of glucose (sugar) in your blood. Glucose is the most important fuel for your body and especially for your brain. As soon as you eat, glucose enters your bloodstream and insulin ensures that your cells can absorb this energy. The body strives to maintain this balance: too much glucose is just as harmful as too little. Stable blood sugar means that your brain and muscles get the energy they need, exactly when you need it.

What causes blood sugar spikes?

Several factors can cause your blood sugar to fluctuate:

  • Fast-digesting sugars: Products such as soft drinks, sweets, white pasta and pastries contain fast-digesting carbohydrates, which cause a rapid rise in your blood sugar. This is often followed shortly afterwards by an energy slump, which can leave you feeling tired and irritable.
  • Irregular meals or an unbalanced diet: If you skip meals or wait too long between eating, your body does not receive a constant supply of energy. Meals without sufficient protein, fibre or healthy fats can also cause spikes and drops.
  • Stress and sleep deprivation: Stress is not just mental. The stress hormone cortisol can cause blood sugar levels to fluctuate significantly, especially during prolonged periods of stress. Lack of sleep exacerbates this effect and makes it more difficult for your body to regulate glucose properly.
  • Excessive caffeine and alcohol consumption: Too much coffee or energy drinks can cause spikes in blood sugar, while alcohol can sometimes cause drops. These fluctuations can lead to fatigue, concentration problems and increased sugar cravings.
  • Not eating enough: Diets that are extremely low in calories or carbohydrates disrupt your blood sugar balance. The body does not get enough fuel and responds with energy dips and cravings for fast sugars.
  • Hormonal fluctuations: Pregnancy, menstruation or other hormonal changes can affect your blood sugar.

The role of the glycaemic index

The glycaemic index (GI) indicates how quickly a carbohydrate-rich meal raises your blood sugar. Foods with a high GI, such as white bread or sweets, cause a rapid spike followed by an energy slump. Products with a low GI, such as whole grains, legumes and vegetables, are digested slowly and release glucose into the blood gradually. By choosing low-GI foods, you can keep your blood sugar stable, prevent energy spikes and reduce sugar cravings.

 

The effect of your blood sugar on your energy

Unstable blood sugar often has an immediate effect on your energy levels: sudden peaks and troughs can lead to concentration problems, mood swings and fatigue. Stable blood sugar, on the other hand, provides constant energy, greater focus and fewer sugar cravings. It also influences the hormones that regulate your energy, alertness and mood, such as insulin, cortisol and adrenaline.

You may also experience other symptoms, both with high and low blood sugar:

High blood sugar (hyperglycaemia)

  • Fatigue or brain fog
  • Dry mouth and thirst
  • Frequent urination
  • Irritability or mood swings
  • Poor concentration and energy peaks followed by dips

Low blood sugar (hypoglycaemia)

  • Trembling, sweating or heart palpitations
  • Strong cravings for sugar or quick snacks
  • Dizziness or light-headedness
  • Irritability or feeling “hangry”
  • Fatigue and difficulty focusing

Long-term health risks

When your blood sugar frequently spikes and drops, your body responds by producing more insulin to remove the glucose from the blood. Insulin not only ensures that glucose enters the cells, but also stimulates the storage of excess energy as fat. In addition, the drops in your blood sugar cause a quick craving for sugar and carbohydrates, causing you to consume extra calories more quickly. In the long term, this can lead to weight gain, especially around the abdomen and waist.

Chronically fluctuating blood sugar can also promote insulin resistance, inflammation and an increased risk of type 2 diabetes. It is therefore important for your health to keep your blood sugar as stable as possible.

Practical tips for keeping your blood sugar stable

1. Eat a balanced diet: Always combine carbohydrates with proteins and healthy fats. Proteins and fats slow down the absorption of glucose, causing your blood sugar to rise gradually and preventing peaks and troughs.

2. Choose slow sugars: Wholemeal products, vegetables and legumes contain complex carbohydrates and fibre, with a low glycaemic index. These are digested slowly, causing glucose to enter the blood gradually and your energy to remain stable for longer.

3. Do not drink coffee on an empty stomach: Coffee stimulates the release of stress hormones such as cortisol, which can cause a rapid rise in your blood sugar. By combining coffee with a meal or snack that contains fats and proteins, you slow down the absorption of caffeine and glucose, releasing your energy more evenly and keeping your blood sugar more stable.

4. Limit stress: Stress activates the hormone cortisol, which can cause a rapid rise in your blood sugar. A short walk, breathing exercises or meditation can help lower cortisol. Read our article Reducing stress – 5 natural ways.

5. Exercise regularly: Physical activity helps keep your blood sugar stable in a natural way. During exercise, your muscles use glucose as fuel, which lowers blood sugar levels and smooths out peaks after meals. In addition, regular activity increases the sensitivity of your cells to insulin, allowing glucose to be absorbed and used more efficiently. Even short walks after meals can help prevent energy dips and keep your body more balanced.

6. Get enough sleep: A good night's sleep helps your body regulate insulin better and prevents unnecessary fluctuations in blood sugar. Sleep deprivation can lead to higher cortisol levels, more sugar cravings and a greater chance of energy dips.

How vitamins and minerals can help

Certain vitamins and minerals can support your body in keeping your blood sugar stable and reducing sugar cravings. Magnesium, for example, plays an important role in regulating insulin and can help prevent spikes and dips. Chromium supports the processing of glucose in the cells, allowing your energy to be released more evenly. Vitamins B1, B6 and B12 contribute to healthy energy metabolism and support your nervous system, which can help reduce stress-related sugar cravings. By getting enough of these nutrients through food or supplements, you can better balance your blood sugar and avoid energy slumps.

Conclusion: energy through balance

A stable blood sugar level is the basis for sustainable energy, mental clarity and a balanced mood. By making small adjustments to your diet, exercise and stress management, you give your body the chance to stay in balance. Make sure you get enough vitamins and minerals to support your body optimally. This will help you feel energetic and alert every day, even during the busiest periods.

Source

Norton, L., Shannon, C., Gastaldelli, A., & DeFronzo, R. A. (2022). Insulin: The master regulator of glucose metabolism. Metabolism: clinical and experimental, 129, 155142. 

Tirone, T. A., & Brunicardi, F. C. (2001). Overview of glucose regulation. World journal of surgery, 25(4), 461–467. 

Flores-Hernández, M. N., Martínez-Coria, H., López-Valdés, H. E., Arteaga-Silva, M., Arrieta-Cruz, I., & Gutiérrez-Juárez, R. (2024). Efficacy of a High-Protein Diet to Lower Glycemic Levels in Type 2 Diabetes Mellitus: A Systematic Review. International journal of molecular sciences, 25(20), 10959. 

Reynolds, A. N., Akerman, A. P., & Mann, J. (2020). Dietary fibre and whole grains in diabetes management: Systematic review and meta-analyses. PLoS medicine, 17(3), e1003053.

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