Comparison of the Chromosomal Patterns Obtained from Groups of Continued Users, Former Users, and Nonusers of LSD-25
American Journal of Psychiatry November 1, 1969 Lewis L. Judd, W.w. Brandkamp, William H. Mcglothlin 16 citations
Chromosome analyses in a single-blind study of heavy LSD users (current and former) and drug-free controls found no significant differences in chromosome breakage rates among the groups. Mean breakage rates were 1.8 percent or less for all three groups, failing to support earlier claims that LSD ingestion increases chromosome aberrations compared to a normal control population. The authors call for a more controlled longitudinal study.