Serotonin syndrome occurs when a person takes drugs that cause excess levels of serotonin to accumulate in the body. Symptoms can include agitation, a dry mouth, dilated pupils, confusion, and more.

Symptoms of low serotonin may include mood changes, feelings of depression or anxiety, and difficulty with functions such as sleep and memory. Physical signs may include gastrointestinal symptoms or ...

Serotonin sends signals between nerve cells. It may help regulate many body functions, including mood, bowel movements, and sleep. Some medications help boost serotonin levels and improve mood.

Dopamine and serotonin are both neurotransmitters. Neurotransmitters are chemical messengers used by the nervous system that regulate countless functions and processes in your body, from sleep to ...

Just about every article on the biology of happiness talks about the neurotransmitter serotonin and why it’s so important to our mood. While the serotonin system is certainly a key player in our mood, ...

Serotonin is a neurochemical that plays a critical role in the way the brain controls our thoughts and feelings. For example, many antidepressants are designed to alter serotonin signals sent between ...