Which neurotransmitter is linked to feelings of anxiety, depression, and aggressiveness?

The correct answer is serotonin, which plays a significant role in regulating mood, emotion, and various psychological processes. Low levels of serotonin are often associated with mood disorders such as anxiety and depression. This neurotransmitter contributes to the feeling of well-being and happiness, and an imbalance can lead to heightened feelings of anxiety and aggression.

Serotonin helps in stabilizing mood and promoting feelings of happiness, while its deficiency can lead to emotional disturbances. Research in psychology and psychiatry frequently highlights the importance of serotonin in maintaining mental health, making it a key focus in the treatment of anxiety and depressive disorders.

Understanding the role of serotonin is crucial, particularly for therapeutic approaches in mental health, where enhancing serotonin levels can alleviate symptoms of these emotional conditions. Other neurotransmitters such as dopamine and norepinephrine also play roles in mood and behavior but are linked to different mechanisms and effects on the brain.