Final answer:
The primary form of amphetamine abuse in recent years is methamphetamine, a highly addictive stimulant that can cause significant health issues and brain damage. Its euphoric effects, ease of production, and low cost have contributed to its widespread abuse.
Step-by-step explanation:
The primary form of amphetamine abuse in recent years is D. methamphetamine. Methamphetamine, often called "crystal meth," has become widespread due to its potent and addictive nature. Users are drawn to the intense euphoria it creates; however, it can have devastating long-term health effects, including dental problems, skin abrasions, memory loss, sleep issues, violent behavior, paranoia, and hallucinations. It is known for its high potential for abuse and addiction, and unlike other stimulants such as amphetamine, long-term use of methamphetamine causes considerable brain damage and neurotoxicity, manifesting in significant changes in brain structure and function.
Methamphetamine is used both medically to treat conditions like ADHD and obesity, and recreationally to increase sexual desire, elevate mood, and enhance energy. Its illegal production and distribution are a global concern due to the significant health risks associated with uncontrolled use. The availability of potent and inexpensive forms of methamphetamine has made it a common choice among drug users, leading to severe addiction cases that are difficult to treat.