The human brain is a very complex system, just like a city, it craves order and efficiency. However, a patient with bipolar disorder has very chaotic brain function; causing mood changes and sometimes suicidal thoughts. Bipolar disorder is a common psychiatric mood disorder defined by recurrent episodes of abnormally elevated mood and depression, changes in energy, and the ability to perform daily tasks. (Joel, Jakosson and colleges) “Bipolar disorder (BD) is a chronic illness with a high risk of relapse. This disease also causes a high rate of suicidal mortality. (Sabrina, Paterniti and Jean-Claude Bisserbe) Numerous studies show that this disease is genetic and therefore hereditary and is transmitted from generation to generation. The closer you are to a bipolar person, the more likely you are to suffer from BD. There are two types of BD: bipolar I and bipolar II. “Bipolar I disorder is defined as being present if the person experiences one or more episodes of mania during their lifetime and usually episodes of depression. The severity and duration of episodes are often serious and can lead to hospitalization. (Black Dog Institute) “Bipolar II disorder is defined as being present if the person experiences both episodes of hypomania and depression, but no manic episodes. The severity of the effects does not lead to hospitalization. (Black Dog Institute) Bipolar disorder can lead to depression, loss of sleep and/or appetite. It can also cause them to feel worthless, guilty and hopeless, which can even lead to suicide if not treated properly. “More than 121 million people worldwide are affected by BD. By 2020, depression is expected to reach second place in the ranking g...... middle of article...... this study aimed to investigate the potential role of monocyte chemoattractant gene polymorphism protein 1 to confer susceptibility to mood disorders. (Carlo, Altamura and colleges) The results of their study suggest not only a clinical but also a genetic and biological difference between mood disorder subtypes. (Carlo, Altamura and colleges) Many other studies are carried out around the world; These are just a few of those that have been achieved. Every study that has been or will be done helps find answers about the reasons and causes of bipolar disorder. This will improve the lives of millions of people and continue to expand treatment options. Every day a person is diagnosed with bipolar disorder and every day we get closer to answers on how to heal and better treat this heavy burden on a person's life..