Skip to content

Harry Sumnall

3 papers in the library · 206 citations · publishing 2002-2021

Papers

The content of ecstasy tablets: implications for the study of their long‐term effects

Addiction December 1, 2002 Jon C. Cole, Mike Bailey, Harry Sumnall et al. 149 citations

In 2001, ecstasy tablets seized in north-west England contained between 20 and 109 mg of MDMA, with most tablets averaging 60–69 mg. Some tablets also contained MDEA. The most common type, Mitsubishi tablets, spanned the full range of MDMA content. Analysis of 80 samples from a single large seizure of White Dove tablets showed low variation, indicating consistent manufacturing. Comparing these data with UK-wide analyses from 1991 to 2001 shows that the average MDMA content in ecstasy tablets has been declining over the decade. The authors argue that because the amount of MDMA per tablet is dropping, studies of long-term effects and neurotoxicity must account for actual ingested doses.

DOI: 10.1046/j.1360-0443.2002.00222.x Ecstasy MDMA Psychology Medicine

Are we any closer to identifying a causal relationship between cannabis and psychosis?

Current opinion in psychology April 1, 2021 Ian Hamilton, Harry Sumnall

Research on the link between cannabis use and psychotic symptoms has advanced over four decades but remains complex. While some insights into the nature of this relationship have been gained, major gaps persist in understanding the full trajectory of cannabis psychosis. Treatment options are limited, and there is little evidence to reliably predict who is at risk, which could enable early intervention to reduce incidence, though complete elimination is unrealistic.

DOI: 10.1016/j.copsyc.2020.07.027 Full text