There is an estimate that 15-25% of students attract a mental disorder, with depression being the biggest problem. The experiment was to investigate depression rates in undergraduate students. Of the students participating. there were 77 students with depression. 72% of these students were female. Today students are high in debt, there are fewer job prospects after graduation, etc. This means students are at a greater risk of getting depression. Adolescence is the transition period between childhood and adulthood. Adolescence suffers from many different psychosocial problems in their life. The cross-sectional study was performed among many adolescents. This study demonstrated that depression is gradually increasing in adolescents during school. Depression affects around 350 million people worldwide. People who deal with depression typically deal with low mood and loss of interest in activities as well as other behavioral problems, feeling negative about the future. In 2006, a survey identified that more than 67% of the US population had gotten depression. While the other half endorsed a genetic cause.There are many ways to get help if you suffer from depression, you’re not stuck with it forever. Cognitive behavioral therapy is an effective treatment for depression. A few studies have experienced that there was a 1/3 fraction of effectiveness. Medication is also an option. This study examined the relationship between depression and undergraduate students. They use 113 students in this sample. Results suggested that depression symptoms result in the relationship between autonomy and belongingness. If a student doesn’t feel belonged in where they are, they often feel like they don’t belong leading to depression.All in all, I have come to the conclusion that there is no single cause of depression. Depression comes from a combination of psychological, environmental, genetic, and biochemical factors. Stress in school, trauma, a difficult relationship, a loss of a loved one, or any other problems lead to depression. Previous research with the brain shows that parts of the brain during an MRI show that regulating mood, sleep, behavior, appetite, and thinking appear abnormally. Also, the chemicals in the brain that are used to communicate, can also be affected. Depression can also run in families, being a genetic disorder. In conclusion, psychology plays a role in depression but there are also many other factors involved.