If it is natural then it is safe—true or false?

A growing number of young people 18–25 years old are seeking a "natural" hallucinogenic experience by eating Psilocybe mushrooms. Some believe that if the whole plant is eaten, the naturally occurring psilocybin will produce a "safe" experience.

Is the psilocybin in the mushrooms "natural?"

Maybe or maybe not. Studies done in California, where over 300 street samples of "psilocybin mushrooms" were bought and analyzed revealed that 85% of the mushrooms were not Psilocybe (the species that produces psilocybin). Instead, the majority were grocery store mushrooms injected with LSD, PCP, or both. It should be noted that LSD is 100 times as potent as psilocybin and has much more intense, long-lasting, and serious effects. LSD and PCP are both manmade.

What if the user is able to get real "shrooms," "mushies," or "sillies" as...