Objectives: To thoroughly evaluate the causes, associated risk factors, and management of anxiety and depression (AD) among young adults by synthesizing current literature. Methods: A thorough search of pertinent databases was done in order to find studies that satisfied the requirements for inclusion. A thorough search of PubMed, Web of Science, SCOPUS, and Science Direct was conducted to find pertinent literature. Results: Nine studies, including a total of 13628 participants diagnosed with anxiety or depression or both, and 4972 (63.2) of them were males, were included in our data. Earlier use of cannabis, poverty, romantic love, and internet addiction were found to be associated with AD in young adults. Brief psychodynamic therapy seems to be a promising strategy for young adults experiencing mild to moderate AD. Cognitive behavioral therapy (CBT) classes, even for short durations, are also beneficial in treating student patients' AD. Referring patients with more severe symptoms to a psychologist skilled in CBT may be beneficial. Conclusion: The development of AD among young adults is multifactorial. Psychodynamic therapy was recommended for mild to moderate AD, while CBT was proposed for young adults with severe forms. Longitudinal, prospective, and randomized trials are needed to study the interventions that may improve AD among young adults as well as the possible causes.