Which of the following is NOT a warning sign of potential substance abuse in soldiers?

In the context of substance abuse, increased social engagement is not typically recognized as a warning sign. In fact, soldiers who are struggling with substance abuse issues often exhibit behaviors that reflect withdrawal from social activities rather than an increase in social interaction. This may manifest as isolation, avoidance of previously enjoyed activities, or reduced contact with friends and family.

The other options represent behaviors and consequences commonly associated with substance abuse. Changes in behavior could indicate mood swings, irritability, or erratic actions that signal a potential problem. Withdrawal from social activities suggests a loss of interest or a desire to escape social situations, aligning with symptoms of substance misuse. Physical health complications may arise as a direct result of substance abuse, leading to various health issues that can be observed in affected individuals. These warning signs are critical for identifying soldiers who may need support or intervention regarding their substance use.