Serotonin: A neurotransmitter that plays a key role in regulating mood, appetite, and sleep. Think of it as the happiness messenger in your brain.
Antidepressants: Medications that are used to treat depression and other mood disorders by altering the balance of chemicals in the brain.
Selective Serotonin Reuptake Inhibitors (SSRIs): A class of antidepressant drugs that work by blocking the reabsorption (reuptake) of serotonin in the brain, allowing more serotonin to be available to improve mood.