What mood does lithium primarily decrease?

Lithium primarily decreases mania, making it a key medication in the treatment of bipolar disorder. It helps stabilize mood swings and is particularly effective in reducing the symptoms of acute manic episodes, such as elevated mood, increased energy, and impulsive behavior. By balancing neurotransmitters in the brain, lithium acts to minimize the euphoric and hyperactive states characteristic of mania, promoting a more stable emotional state. Its mood-stabilizing properties help prevent the recurrence of manic and depressive episodes in individuals with bipolar disorder, thereby serving as an essential tool in managing this condition.