What is a common symptom of marijuana abuse?

Bloodshot eyes are a well-documented and common symptom associated with marijuana use. The active compounds in marijuana, particularly THC (tetrahydrocannabinol), cause blood vessels to expand, which can lead to noticeable redness in the eyes. This effect can occur soon after consumption and is easily recognized, making it a hallmark indication of marijuana use or abuse.

While other options such as increased energy, enhanced social skills, and extreme weight loss might be associated with various substances or conditions, they are not specifically noted as common symptoms of marijuana abuse. Increased energy and focus tend to be more characteristic of stimulants, while enhanced social skills could be attributed to the anxiolytic effects of some substances but is not definitive of marijuana use. Extreme weight loss is more commonly linked to other issues, such as certain medical conditions or severe substance abuse patterns not typically associated with marijuana.