Opinion Mining of Erowid's Experience Reports on LSD and Psilocybin-Containing Mushrooms.
Drug safety May 1, 2025 Ahmed Al-Imam, Riccardo Lora, Marek A Motyka et al. 1 citation
Natural language processing of 2188 user reports from the Erowid forum reveals distinct emotional and thematic patterns in experiences with psilocybin mushrooms versus LSD. The BERT model classified most experiences as negative, especially for psilocybin mushrooms, while VADER indicated more positive experiences for mushroom users. RoBERTa, which achieved the highest accuracy, predominantly classified experiences as negative or neutral. Lexicon analysis showed psilocybin reports emphasize introspection and time dilation, whereas LSD reports highlight memory issues and cognitive disorientation. These analyses can inform harm reduction and policy-making.