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Chromosomal Abnormalities in Leukocytes from LSD-25 Users

S. T. Irwin, José Egozcue

Science July 21, 1967 DOI: 10.1126/science.157.3786.313 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Case-control study Peer reviewed
Sample size 17
Population LSD-25 users and nonuser controls
Intervention LSD-25
Duration 1 day to 6 months after last LSD-25 dose
Topics LSD
Keywords Andrology Genetics Molecular biology Physiology Toxicology Dna repair mechanisms
Citations 139
Key findings LSD-25 users showed a significant increase in chromosomal abnormalities in leukocytes compared to nonuser controls.

Abstract

A significant increase of chromosomal abnormalities was found in leukocytes from LSD-25 users (six out of eight) compared to nonuser controls (one out of nine). The two LSD-25 users showing no damage reported the lowest estimated average dose. The subjects whose cells showed damage were tested between 1 day and 6 months after their last LSD-25 dose.

Comparable studies

Other observational and cohort studies on LSD, most cited first.

Study Year Design Participants
Increased Global Functional Connectivity Correlates with LSD-Induced Ego Dissolution. Human participants 2016 Observational cohort
Increased spontaneous MEG signal diversity for psychoactive doses of ketamine, LSD and psilocybin Humans 2017 Observational study
Classic psychedelic use is associated with reduced psychological distress and suicidality in the United States adult population. USA adult respondents from the National Survey on Drug Use and Health (2008-2012) 2015 Observational cohort n = 190,000
Psychedelics not linked to mental health problems or suicidal behavior: A population study Randomly selected United States adults 2015 Observational cohort n = 135,095
Whole-Brain Multimodal Neuroimaging Model Using Serotonin Receptor Maps Explains Non-linear Functional Effects of LSD. Healthy human participants 2018 Observational study with computational modeling

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