1. Persistent feeling of hunger

Insulin is the only hormone in the body that lowers blood sugar. Blood sugar can be high when the body's insulin secretion is insufficient, or when the body's response to insulin becomes sluggish. As a result, the sugar is not efficiently converted and broken down by insulin, and the excess sugar is stored in the fat cells, so you feel constant hunger.

2. Frequent urination

Frequent urination is a common symptom in people with diabetes, which is closely related to the function of the glomeruli to filter urine. If the blood sugar is too high, it increases the osmotic pressure of the original urine, interfering with the reabsorption of water in the original urine by the renal tubules, thus leading to excessive urine. As a result, people with high blood sugar usually feel an increase in urine output and an increase in the frequency of urination.

3. Frequent thirst

This is mainly due to the lack of water in the body due to excessive urination, and as a result, people with high blood sugar often feel thirsty.

4. Weight loss

When blood sugar is too high, the level of insulin in the body is usually low. The human body needs a large amount of glucose to maintain normal body functions, but the lack of sufficient insulin cannot effectively break down glucose to meet the demand, and at this time, it will start to burn fat, and in the long run, it will inevitably lead to weight loss.

5. General malaise

Blood sugar is too high to be broken down by insulin, resulting in a shortage of glucose and other nutrients in the body, plus weight loss, possible complications and other factors, which can lead to lack of energy and general fatigue.