Which of the following is a short-term effect of meth use?

The short-term effect of meth use resulting in euphoria is primarily due to the powerful stimulant properties of methamphetamine. When someone ingests meth, it significantly increases the release of dopamine in the brain, which is a neurotransmitter associated with pleasure and reward. This spike in dopamine leads to intense feelings of euphoria, increased energy, and heightened alertness, making it a sought-after effect by users.

The other options are more associated with either longer-term effects or other negative aspects. For instance, depression and paranoia can occur as the effects of meth wear off or with prolonged use, while weight gain is typically not associated with meth use, as it often leads to decreased appetite and weight loss in the short term. Understanding these different effects can help individuals identify the immediate and lasting impacts of methamphetamine on users.