A woman in her home having a virtual telehealth appointment with her healthcare provider, discussing the relationship between diabetes and thyroid health.

Understanding the connection between diabetes and thyroid health

February 11, 2025

 

Diabetes is a chronic condition that affects millions of people worldwide. It's also linked to other chronic health issues like heart disease and kidney problems. But did you know there’s a relationship between diabetes and thyroid health as well?
 

Both diabetes and thyroid conditions are characterized by dysfunctions in the endocrine system, a network of glands in the body that produces hormones. It's not uncommon for someone to have both thyroid disease and diabetes, making it crucial to understand how these conditions interact.
 

Thyroid disease and blood sugar control

The thyroid gland plays a vital role in regulating metabolism by producing thyroid hormone. When this delicate balance is disrupted, it can have far-reaching effects on the body, including blood sugar imbalances.
 

Hyperthyroidism, a condition where the thyroid produces too much hormone, can cause the metabolism to speed up. This can lead to higher blood sugar levels as the body processes glucose more quickly. On the other hand, hypothyroidism, where the thyroid produces too little hormone, can slow down metabolism. This can make the body less efficient at regulating blood sugar levels.
 

While thyroid disease doesn't directly cause blood sugar imbalances, like diabetes, if left unmanaged, it can significantly impact blood sugar control. This is true for both Type 1 and Type 2 diabetes as thyroid dysfunction can affect insulin needs and glucose metabolism in both conditions.
 

Autoimmune connection: Thyroid disease and Type 1 diabetes

Type 1 diabetes is an autoimmune disease in which the body's immune system attacks the cells that produce insulin. Some forms of thyroid disease are also autoimmune in nature. These include Hashimoto's disease, which is typically associated with hypothyroidism (underactive thyroid), and Graves' disease, which is usually characterized by hyperthyroidism (overactive thyroid).
 

People with autoimmune conditions like Type 1 diabetes are at a higher risk of developing other autoimmune diseases, like Graves’ disease and Hashimoto’s thyroiditis. This connection underscores the importance of comprehensive health monitoring for individuals with autoimmune conditions.
 

Screening for thyroid issues and diabetes

Given the intricate relationship between diabetes and thyroid health, it's crucial to be proactive about screening and monitoring. If you have diabetes, it's important to discuss your potential risks of developing thyroid disease with your healthcare provider. The American Thyroid Association recommends screening for thyroid dysfunction beginning at age 35 and follow-up testing every five years. However, if you have diabetes or other related risk factors, your provider may recommend more frequent testing.
 

Labcorp OnDemand offers a Standard Thyroid Test that measures thyroid-stimulating hormone (TSH) and Free T4 (thyroxine) in the blood. This test can help assess thyroid function and screen for both underactive and overactive thyroid conditions.
 

If you’ve already been diagnosed with thyroid disease, it's equally important to be aware of how thyroid dysfunction can affect blood sugar levels. Labcorp OnDemand’s Diabetes Risk (HbA1c) Test measures your average blood sugar level over 8-12 weeks, helping to screen for prediabetes and diabetes.
 

Understanding the connection between diabetes and thyroid health is crucial for maintaining overall well-being. By staying informed and proactive about your health, you can work with your healthcare provider to manage these conditions effectively and lead a healthier life.