If you experience any of the following symptoms while sleeping, you should be alert to the possibility of elevated blood sugar levels.

1. Excessive Thirst

In people with diabetes, high blood sugar levels increase the osmotic pressure of the blood plasma, which can trigger feelings of thirst, especially during the night.

2. Hunger

Most people with diabetes have either insulin resistance or insufficient insulin production. As a result, even when blood sugar levels are high, their bodies struggle to use glucose effectively because insulin is unable to function properly.

This inability to utilize glucose can lead to persistent feelings of hunger.

At the same time, the higher the blood sugar level, the more difficult it becomes for the body to use glucose as an energy source. Consequently, the body begins to burn more fat and protein, which can further increase hunger.

3. Frequent Urination

There are three main reasons why people with diabetes may experience increased nighttime urination.

First, high blood sugar can cause osmotic diuresis. When blood glucose levels rise, the concentration of dissolved substances in the kidney tubules increases, reducing the amount of water reabsorbed by the kidneys and leading to more frequent urination.

Second, people with diabetes often experience excessive thirst and may drink large amounts of water. This can suppress the secretion of antidiuretic hormone, resulting in increased urine production.

Third, poor long-term blood sugar control can damage the kidneys. When kidney function is impaired, their ability to reabsorb water decreases, causing more frequent urination.

4. Dry Skin

High blood sugar levels can contribute to dehydration, which may result in dry skin.

In addition, prolonged poor blood sugar control can damage peripheral nerves. This nerve damage may lead to skin inflammation, dryness, and flaking.

If these symptoms occur frequently—especially in combination—it is advisable to monitor your blood sugar levels and consult a healthcare professional for proper evaluation and diagnosis.

5. Numbness in the Hands and Feet

High blood sugar levels can slow down metabolism and blood circulation throughout the body. As a result, the hands and feet may not receive an adequate blood supply, leading to numbness or tingling sensations.

Therefore, if you frequently experience numbness, weakness, or tingling in your limbs before going to sleep, it could be a warning sign of elevated blood sugar levels.