Can Blood Sugar Affect Heart Rate? An Explorative Look Into Heart Rate And Blood Sugar Levels

In a world where health is becoming a central point of focus, two indicators stand out in preventative health and disease management: heart rate and blood sugar levels. These two seemingly distinct measurements offer profound insights into our body’s internal functioning, significantly more so when we realize they’re not as independent as we might think. The intricate relationship between blood sugar levels and heart rate is not just a medical curiosity but a critical piece of the puzzle in the holistic understanding of human health.

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The Science Behind Heart Rate And Blood Sugar Levels:

Understanding the connection between heart rate and blood sugar levels involves delving into the physiological responses our bodies undertake during various states of glucose metabolism. These responses can significantly differ between individuals, especially when comparing healthy individuals with those having diabetes.

Short-Term Effects Of Glucose On Heart Rate

Recent scientific insights have shed light on the fascinating short-term effects of glucose intake on heart rate, particularly during periods of cognitive demand. A study conducted by D. O. Kennedy and A. B. Scholey, published in Psychopharmacology (1), reveals that consuming glucose can actually increase heart rate when the brain is engaged in mentally challenging tasks.

In their research, participants were given a glucose drink before performing tasks of varying mental demands. Findings indicated that not only did glucose improve performance on the more challenging tasks, but participants in the glucose condition also experienced higher heart rates during cognitive processing compared to control conditions. This suggests that glucose ingestion has a stimulating effect on physiological parameters, potentially mobilizing the body’s resources in response to mental effort — an effect prominently reflected in increased heart rates.

These observations propose a compelling perspective on how heart rate and blood sugar levels interact in real-time, emphasizing that the relationship isn’t static but can fluctuate based on immediate physiological demands and glucose availability.

Heart Rate And Blood Sugar Correlation In Diabetes

In the context of diabetes, the dynamics of blood sugar and heart rate take on additional complexity. A study titled “Correlation Between Fasting Heart Rate And Fasting Plasma Glucose Level In Rural Indians” published in the European Heart Journal (2) demonstrated a significant correlation between these two parameters in the diabetic population.

Researchers found that a higher resting heart rate is significantly associated with higher fasting blood glucose levels. This correlation underscores the fact that heart rate isn’t just a number you see on your fitness tracker; it’s a critical indicator of health, mirroring underlying metabolic disturbances often seen in conditions like diabetes.

Furthermore, increased resting heart rate in diabetics hints at a disrupted balance within the ANS (autonomic nervous system), particularly heightened sympathetic activity. This “fight or flight” branch of the nervous system can cause various physiological effects, including increased heart rate, and is known to contribute to insulin resistance and diabetes-associated complications.

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Understanding The Big Picture Of Heart Rate And Blood Sugar Levels

The findings underscore the necessity for medical professionals to view an increased resting heart rate as a possible indicator of higher blood sugar levels. It’s crucial, however, to differentiate between correlation and causation in this scenario. A heightened heart rate doesn’t directly indicate elevated blood sugar; rather, it’s one component within an intricate network of health indicators.

Tips For Naturally Lowering Blood Sugar Levels:

Maintaining optimal blood sugar isn’t just important for diabetics; it’s crucial for everyone’s overall health and wellbeing. There are several natural strategies that can effectively lower blood sugar levels:

  1. Exercise Regularly: Regular physical activity can help increase insulin sensitivity, allowing your body’s cells to use sugar more effectively. Activities like brisk walking, running, cycling, and swimming have been shown to reduce blood sugar levels in diabetics and non-diabetics alike.
  2. Focus on Whole Foods: Diets rich in whole, unprocessed foods help regulate blood sugar. Focus on consuming a diverse range of fruits, vegetables, whole grains, lean proteins, and healthy fats.
  3. Stay Hydrated: Drinking enough water helps your kidneys flush out the excess blood sugar through urine. It’s one of the easiest ways to maintain healthy blood sugar levels.
  4. Manage Stress: Stress hormones like cortisol can elevate blood sugar levels. Techniques like deep breathing, meditation, yoga, and mindfulness can reduce stress and have a beneficial impact on blood sugar levels.
  5. Get Sufficient Sleep: Poor sleep can disrupt important metabolic hormones, leading to increased blood sugar levels and insulin resistance. Ensure you’re getting adequate, quality sleep each night.
  6. Consume Dietary Fiber: A diet high in fiber can slow carb digestion and sugar absorption, leading to a more gradual rise in blood sugar levels. Focus on high-fiber foods like vegetables, fruits, legumes, and whole grains.
  7. Consider Supplements: Ingredients like Cinnamon extract, Banaba leaf extract, and berberine can help to improve fasting blood sugar and improve insulin sensitivity (3,4,5). Unfortunately, the complete list of ingredients that can help with blood sugar control is beyond the scope of this blog post. If you are interested in learning more, click the following link to discover more ingredients that are good for blood sugar management.

Remember, these tips should complement, not replace, advice from your healthcare provider, especially if you have diabetes or other health conditions.


In answer to “can blood sugar affect affect heart rate?”, the answer is yes. The interplay between heart rate and blood sugar levels is an exciting field of study that underscores the complexity of our bodies. It reminds us that our body’s systems don’t operate in isolation — they’re a part of an interconnected network. At the end of the day, these findings serve as a reminder that maintaining optimal blood sugar levels is crucial, not just for diabetics but for everyone. It’s not a stretch to say that understanding the nuances of how blood can sugar affect heart rate can have profound implications for our broader health and wellbeing.

Want more tips for how to keep your blood sugar in check? Read our post with 5 Low Sugar Breakfast Recipes or learn more about how Glucosyl™ works to help regulate blood sugar.

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