Long-lasting subjective effects of LSD: "200μg given to 16 healthy participants. After a year, 10 participants rated their LSD experience as among the top 10 most meaningful experiences in their lives." (2017)

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Long-lasting subjective effects of LSD: "200μg given to 16 healthy participants. After a year, 10 participants rated their LSD experience as among the top 10 most meaningful experiences in their lives." (2017)