Melatonin is a hormone produced by the pineal gland in the brain. It is most commonly known for its role in regulating sleep-wake cycles, but it also plays a crucial role in immune system function.

Melatonin has been shown to have a number of different effects on the immune system. It can boost the production of immune cells, including T cells, B cells, and natural killer cells. It can also increase the activity of these cells, making them more effective at fighting off infections and other threats.

While more research is needed to fully understand the relationship between melatonin and infection prevention, some studies suggest that melatonin may be able to help prevent certain infections. For example, one study found that taking melatonin supplements reduced the risk of developing upper respiratory tract infections among night shift workers.

Again, more research is needed in this area. However, some studies suggest that melatonin may be able to help reduce inflammation and other symptoms associated with autoimmune disorders such as rheumatoid arthritis and multiple sclerosis. It is important to note that melatonin should not be used as a replacement for other treatments prescribed by a healthcare professional.

Melatonin is generally considered safe when used appropriately. However, some people may experience side effects such as drowsiness, headache, or nausea. It is also possible that melatonin supplements could interact with certain medications, so it is important to talk to a healthcare professional before taking melatonin supplements.

There are a number of natural ways to increase melatonin levels, including getting plenty of natural sunlight during the day, avoiding bright screens and lights in the evening, and establishing a regular sleep routine. Certain foods, such as tart cherries, walnuts, and almonds, also contain melatonin.