Does melatonin increase blood sugar levels?

Melatonin is a hormone secreted by the pineal gland, primarily functioning to regulate the body's circadian rhythm and sleep cycle. Whether melatonin raises blood sugar levels requires analysis from multiple perspectives.

1. Melatonin mainly participates in regulating the body's sleep-wake cycle and circadian rhythms and does not directly involve glucose metabolism. Therefore, melatonin itself does not have a direct effect on raising blood glucose levels.

2. Long-term use of melatonin at doses exceeding certain levels may increase the risk of developing diabetes. This is because melatonin might affect insulin sensitivity, thereby leading to elevated blood glucose levels. However, this does not mean that melatonin directly causes an increase in blood sugar; rather, its long-term use may adversely affect insulin sensitivity, indirectly influencing blood glucose levels.

3. Consuming high-sugar foods while taking melatonin or having pre-existing conditions such as diabetes or other disorders of glucose regulation may also affect blood sugar levels.

Therefore, melatonin itself does not directly cause elevated blood sugar. When using melatonin, attention should be paid to dosage and duration of use, as long-term use may increase the risk of diabetes. It should be used under professional guidance.