DeBeck et al. confirm that criminalisation of drug use has a negative effect on HIV prevention and treatment, and provide an objective evidence base for decriminalisation.

A new study in Lancet Global Health reveals that opioid-dependent individuals in compulsory drug treatment were significantly more likely to relapse to opioid use after release than opioid-dependent individuals receiving methadone in voluntary treatment centres.

A new study in Lancet Global Health reveals that opioid-dependent individuals in compulsory drug treatment were significantly more likely to relapse to opioid use after release than opioid-dependent individuals receiving methadone in voluntary treatment centres.

In this editorial The Lancet examines the recent report on Alcohol, Drugs, and Health published by the USA's Surgeon General.

This is the first in a series of six papers on HIV and related infections in prisoners.

This is the fourth in a series of six papers on HIV and related infections in prisoners.

The Johns Hopkins–Lancet Commission on Drug Policy and Health has sought to examine the emerging scientific evidence on public health issues arising from drug-control policy.

The Sustainable Development Goals should include a set of specific commitments to respond to the drugs issue and provide a frame for the basis of next year's UNGASS.

As Colombia’s notorious cocaine export business continues to draw headlines and US money to combat it, the nation’s capital is beset by its own addiction crisis.

This report, consistent with previous evidence, suggests that passage of state medical marijuana laws does not increase adolescent use of marijuana.