PSY 430 Lecture Notes - Lecture 12: Irritable Bowel Syndrome, Monoamine Oxidase, Major Depressive Disorder
Document Summary
Mental illness results from the combination of biological predisposition and experiences. A solid understanding of a combination of both aspects is necessary for successful. Major depression: feeling sad and helpless everyday for weeks and includes the following: Little energy, feelings of worthlessness. suicidal thoughts, feelings of hopelessness, dif culty sleeping, dif culty concentrating, little pleasure. Absence of happiness is a more reliable symptom that increased sadness. Childhood depression is equally common in both genders. Some people suffer ltd but it is more common to have episodes of depression separated by periods of normal mood. Studies of twins and adopted children suggest a moderate degree of heritability. Some of the genes associated with depression are also associated with anxiety disorders, add, ocd, substance-abuse, bulimia, migraines, and irritable bowel syndrome. Risk is elevated among relatives of people with early-onset depression (before 30) Predisposition depends on a variety of genes. Effects of these genes have varied between studies.
