Introduction to Substance Addiction Substance addiction, also known as substance use disorder, is a complex condition characterised by an uncontrollable and compulsive need to use substances despite harmful consequences. This type of addiction can involve a wide range of substances, including alcohol, tobacco, prescription medications, and illicit drugs. Each substance has unique effects on the brain and body, leading to various physical, psychological, and social challenges. Understanding Substance Addiction Substance addiction is not simply a matter of willpower or moral failing. It is a chronic disease that affects the brain's reward system, motivation, and memory. Over time, repeated use of a substance alters the brain's structure and function, making it increasingly difficult for individuals to resist the urge to use. These changes can create intense cravings and make it challenging to maintain control over substance use. Types of Substance Addiction Alcohol Addiction Ch...