Question: Which of the following statements best reflects current research on the possible explanations for why substance use disorders (SUDs) and other mental disorders often occur together? Group of answer choices Substance use disorders always cause mental disorders due to their impact on brain chemistry. People with mental disorders are less likely to develop SUDs because they avoid substance use. Co-occurring disorders are primarily the result of poor lifestyle choices and lack of willpower. Mental disorders and SUDs may co-occur due to shared risk factors, self-medication, or substance-induced brain changes. There is a lack of research examining substance use disorder and mental illness. Need Assignment Help?