A parent's involvement in substance abuse can significantly impact custody decisions. Courts prioritize the safety and well-being of the child, and substance abuse issues raise concerns about a parent's ability to provide a stable and nurturing environment. Evidence of substance abuse, such as arrests for drug-related offenses or involvement in criminal activities, can be detrimental to a parent's custody case. The court may consider the potential risks associated with substance abuse, such as neglect, endangerment, or instability in the child's life. A parent struggling with substance abuse issues is less likely to be awarded custody, as the court seeks to protect the child's best interests and ensure their safety and well-being. In such cases, the court may consider alternative custody arrangements, such as supervised visitation or rehabilitation programs, to address the parent's substance abuse issues and promote a healthier environment for the child.