serotonin (5-HT)

Serotonin, also known as 5-HT, is a neurotransmitter – a chemical that helps transmit signals in the brain. It plays a crucial role in regulating mood, emotions, sleep, and appetite. Often referred to as the "feel-good" hormone, higher levels of serotonin are linked to feelings of happiness and well-being, while lower levels are associated with depression and anxiety. Serotonin is produced in the brain and also in the intestines, and its balance is essential for mental health. Certain medications and lifestyle changes can influence serotonin levels, helping to improve mood and emotional stability.