neurotransmitters

Acetylcholine

Functions: Movement, learning, and memory

Too little: Alzheimer’s disease (memory loss)

Too much: Muscle convulsions

Dopamine

Function: Reward and Pleasure

Too little: Parkinson’s disease (Tremors)

Too much: Schizophrenia

Serotonin

Functions: Mood, sleep, and appetite

Too little: Depression and anxiety

Too much: Serotonin Syndrome (restlessness, fever, seizures)

Norepinephrine

Functions: Alertness, arousal, stress response

Too little: Depression, stress

Too much: Depressed mood

Glutamate

Function: The Main exciting neurotransmitter (speeds up the brain)

Too little: Trouble learning & memory

Too much: Migraines and seizures

GABA

Functions: The main calming neurotransmitters (slows the brain)

Too little: Seizures, insomnia, anxiety

Too much: cognitive impairment, drowsiness, muscle weakness

Endorphins

Function: Natural painkillers

Too little: pain sensitivity, depression

Too much: Can feel no pain

Substance P

Function: Sends pain signals

Too little: Can’t feel pain

Too much: chronic pain