How might substance use manifest physically in an individual?

Substance use can manifest physically in a variety of ways, and bloodshot eyes, as well as noticeable odors, are common indicators. When an individual uses certain substances, such as alcohol or marijuana, one may observe bloodshot or red eyes due to the dilation of blood vessels in the eyes. Additionally, specific substances have distinct odors that can linger on the breath or skin, making it a tangible sign of use. This combination provides clear physical evidence that can be recognized by others and is frequently associated with substance intoxication or withdrawal.

In contrast, options such as increased strength, calm demeanor, or improved coordination may not accurately reflect typical physical manifestations of substance use. Many substances may impair strength and coordination rather than enhance them. Similarly, a calm demeanor can result from various factors and may not be a definitive sign of substance use, as certain substances could lead to agitation instead. Thus, the presence of bloodshot eyes and distinct odors serves as a more reliable and recognizable indication of possible substance use.