Medicines such as Selective Serotonin Reuptake Inhibitors (SSRI) ease the symptoms of heavy depression by increasing your levels of serotonin. Serotonin is the hormone that is key for your happiness because it stabilizes mood and initiates the feeling of well-being. Moreover, it actually affects your whole body through the nervous system. But it also exerts numerous forces on your heart. These include <em>an increase in heart rate</em>, fibrosis of cardiac valves, coronary constriction, arrhythmias and thrombosis
