Understanding the Connection Between Diabetes & Heart Rate

At first glance, diabetes and heart rate may seem like separate health concerns, but they’re very closely linked, especially for people dealing with obesity. As a comorbidity of obesity, diabetes impacts many bodily functions, including how your heart works. One of the early warning signs of diabetic complications can actually be changes in heart rate. If you’ve been diagnosed with diabetes or are concerned about your risk, understanding how diabetes affects your heart rate could be a live-saving step. 

What Is a Normal Heart Rate & Why Does It Matter?

Your heart rate, also known as your pulse, is the number of times your heart beats in one minute (bpm). It’s an instant measurement of how efficiently your heart is working. 

A normal resting heart rate for most healthy adults falls between 60 and 100 beats per minute. A resting bpm below 60 (known as bradychardia) is often a sign of excellent cardiovascular fitness; the heart is strong enough to pump sufficient blood with fewer beats.

A persistently high resting heart rate (tachycardia) means your heart is constantly working overtime, and may indicate underlying stress on the heart or other health issues. In people with obesity and/or diabetes, their resting heart rate tends to be higher. Over time, this excessive workload contributes to the wear and tear on the heart muscle and blood vessels, significantly increasing the risk of cardiovascular disease and heart failure. 

How Diabetes Affects Your Heart Rate

Diabetes impacts heart rate primarily through a condition called autonomic neuropathy, a form of nerve damage that affects the nerves that regulate involuntary bodily functions. Over time, high blood sugar levels (hyperglycemia) can damage the vagus nerve, which helps control heart rate.

People with diabetes often have less variation in their heart rate, which means their heart doesn’t adjust as well to changing demands such as activity or stress. This lack of adaptability can mean that the heart is less efficient and more prone to dysfunction. In addition, poor glucose control can cause inflammation and metabolic stress that overstimulates the sympathetic nervous system. When this happens, the body stays in its  “fight or flight” response mode, leading to a consistently elevated heart rate. 

Why Diabetes Can Lead to an Increased Heart Rate

Those with diabetes often experience a variety of interconnected reasons which lead to an increased heart rate. One major factor is damage to the autonomic nervous system, which alters the natural pacing mechanisms of the heart. When the nerves responsible for slowing the heart are weakened or damaged, the heart tends to beat faster even when the body is at rest. 

Diabetes also contributes to vascular damage, including stiffening of the arteries, which forces the heart to work harder to circulate blood; this naturally causes the heart rate to rise. Episodes of low blood sugar (hypoglycemia) can also cause a sudden release of adrenaline, which results in a rapid heart rate. People with autonomic neuropathy may not even feel the usual warning signs of hypoglycemia, making these episodes incredibly dangerous. 

People with diabetes often have an impaired cardiovascular response to exercise. They have a lower peak heart rate during activity and a slower return to baseline afterwards, suggesting that their cardiovascular system is under greater strain and less adaptable. 

The Warning Signs of Diabetes and a Rapid Heart Rate

While a slightly elevated heart rate might not seem alarming on its own, it can be a red flag in the context of diabetes. A resting heart rate that’s consistently over 100 beats per minute without a clear trigger like caffeine or stress could be a problem. If your high heart rate is accompanied by symptoms such as heart palpitations, shortness of breath with mild activity, fatigue, or dizziness, it means that your heart is working harder than it should. 

In people with diabetes, these symptoms can be compounded by poor blood sugar control and existing nerve damage. One particularly concerning sign is hypoglycemia unawareness, especially when it results in a rapid heartbeat, sweating, or confusion. This happens when nerve damage dulls the body’s ability to send distress signals.

Proactive Steps to Manage Your Diabetes & Heart Rate

Managing your heart rate and diabetes together involves a combination of medical care, lifestyle changes, and close monitoring. Maintaining stable blood sugar levels is critical, as good glycemic control can help prevent or slow the progression of autonomic neuropathy. 

Weight loss is another powerful tool. Even a modest weight reduction can significantly improve blood sugar levels and ease the burden on your heart. Regular exercise improves cardiovascular fitness, which helps normalize heart rate. In addition, exercise also enhances heart rate recovery.

A diet rich in fiber, healthy fats, lean protein, and low in refined sugars supports better glucose control and reduces cardiovascular strain. Most importantly, make sure to visit your healthcare provider regularly to adjust medications, screen for nerve damage, and evaluate your risk for cardiovascular diseases and complications. 

Start Your Journey to a Healthier Heart

If you’re facing the complex challenge of managing obesity and diabetes, the path to sustained wellness can feel overwhelming. Our Bariatric Artery Embolization procedure can help you lose weight and decrease your risk for diabetes-related complications like increased heart rate and cardiovascular disease. Take the first step toward a stronger heart and a healthier life- contact us today!