How Is Your Thyroid Disorder Affecting Your Blood Sugar? | Diabetes Health Page

How Is Your Thyroid Disorder Affecting Your Blood Sugar?

By NeNa | Articles

Feb 23

Diabetes affects the entire body, and this includes the function of your organs, tissues, and glands. So, it’s not surprising that it impacts the thyroid gland as well. Keeping track of the thyroid is recommended for everyone, especially for those with diabetes.

This vital gland produces hormones which affect the function of insulin, while insulin is also affecting the gland. In fact, more than ten percent of Americans with diabetes have a problem with their thyroid.

Lower or higher function of your thyroid gland can aggravate your diabetes and cause many health complications. Therefore, you have to check your thyroid regularly to prevent this from happening.

Hyperthyroidism, or too much thyroid hormone, increases insulin resistance. On the other hand, hypothyroidism, or too little thyroid hormone, raises the cholesterol levels. Both of these thyroid disorders raise the risk of heart disease.

Patricia Wu, MD, an endocrinologist, believes thyroid disorders are more prevalent in people with diabetes, in comparison with the general population.

Many thyroid disorders along with type 1 diabetes involve the immune system. An impaired immune system can cause hyperthyroidism, hypothyroidism, and diabetes.

In fact, those with type 1 diabetes have a higher risk of Graves’ disease  – a hyperthyroid condition. On the other hand, those with type 2 diabetes have a higher risk of an underactive thyroid.

Nevertheless, both types of thyroid disorder are present in both types of diabetes.

Symptoms of Hypothyroidism

Here are the most common warning signs of an underactive thyroid:

  • Weight gain
  • Fatigue
  • Constipation
  • Sensitivity to cold
  • Dry skin
  • Hoarseness
  • Puffy face
  • Higher cholesterol levels
  • Muscle weakness
  • Joint pain, stiffness, and swelling
  • Aches, stiffness, and tenderness in muscles
  • Slowed heart rate
  • Thinning hair
  • Impaired memory
  • Depression

Symptoms of Hyperthyroidism

Mild hyperthyroidism could cause no symptoms. Also, they could differ based on the degree. Here are the most common symptoms indicating you have an overactive thyroid:

  • Weight loss, despite eating as always, or even more
  • Increased appetite
  • Tachycardia (heart rate higher than 100 beats per minute, irregular heartbeat
  • Sweating
  • Increased sensitivity to heat
  • Irritability, anxiety, nervousness
  • Changes in bowel movements or more frequent bowel movements
  • Muscle weakness, fatigue
  • Swelling in the neck
  • Skin thinning
  • Trembling of the hands and fingers
  • Sleep disturbances
  • Brittle hair

Effect on Diabetes Control

Regular thyroid function is crucial for regulating energy metabolism. So, a thyroid disorder could significantly affect blood sugar control in people with diabetes.

Even though both disorders, hypothyroidism, and hyperthyroidism, influence the course of diabetes, their effects are slightly different.

Hyperthyroidism

An overactive thyroid is usually connected to increased requirements for insulin and worse blood glucose control.

The excess thyroid hormone produced in the body causes a higher production of glucose in the liver, increased insulin resistance, and faster absorption of glucose through the intestines.

A person with diabetes could have an underlying thyroid disorder if they have deterioration in blood sugar control, unexplained weight loss, or higher requirements of insulin. In some cases, overactive thyroid could reveal latent diabetes.

Diabetes increases the risk of heart disease, while hyperthyroidism raises the risk of abnormal heart rhythm, angina, worsen heart failure, and other heart issues. That’s because overactive thyroid causes rapid heart rate.

So, having both of these conditions makes you more prone to heart problems than other people.

What’s more, if you don’t treat your hyperthyroidism, it could lead to excessive bone loss, thus leading to bone thinning, or osteoporosis. This is dangerous as a simple falling could cause bone fractures.

And, people with diabetes who have nerve damage or diabetic neuropathy are more likely to fall because of lack of nerve sensation in their feet.

So, diabetes accompanied with peripheral neuropathy and untreated hyperthyroidism is a dangerous combination.

Hypothyroidism

Underactive thyroid is less dangerous than overactive thyroid among people with diabetes. That’s because it rarely causes significant blood sugar fluctuations.

However, it can decrease the clearance of insulin from the bloodstream, so the insulin dose might be lowered.

An underactive thyroid is usually followed by different abnormalities in the blood lipid levels, including increased LDL cholesterol, total cholesterol, and triglyceride levels.

Since abnormal lipid levels usually accompany type 2 diabetes, hypothyroidism is only worsening them. This, in turn, further increases the already high risk of stroke and heart disease among people with diabetes.

Conclusion

As you can see, diabetes is closely connected to the thyroid – a gland which produces hormones that are essential for the body’s functioning. So, regular check-ups of this gland are important, especially if you have diabetes.

Early detection of a thyroid disorder will enable you to treat it soon and properly, thus reducing the risk of many health problems, most of which are related to diabetes.