Marijuana significantly influences an individual's behavior and cognitive functions, exhibiting both short-term and long-term effects. In the short term, users often experience altered perceptions, mood changes ranging from euphoria to anxiety, impaired body movement, and difficulties in thinking and problem-solving. These changes can affect behaviors and decision-making abilities, leading to challenges in academic, professional, and personal settings. Long-term use, especially when initiated in adolescence, may result in more permanent alterations, including diminished cognitive function and changes in brain development. Furthermore, marijuana use is associated with an increased risk of psychiatric disorders, including depression, anxiety, and substance use disorders, profoundly impacting an individual's behavior and overall mental health.