Substances like MDMA are often associated with short-term feelings of euphoria and energy, but they carry significant health risks. These can include dehydration, overheating, increased heart rate, and impaired judgment, which may lead to dangerous situations. Repeated or high-dose use can affect brain chemistry, impacting memory, mood, and mental health. There is also a risk of contamination or unknown purity in unregulated products. Long-term effects may include anxiety, depression, and sleep issues. Understanding these risks and making informed, safety-focused decisions is important for overall well-being.