End the Ban on Psychoactive Drug Research

It’s time to let scientists study whether LSD, marijuana and ecstasy can ease psychiatric disorders

Discovery of new psychiatric medication, whether for the treatment of depression, autism or schizophrenia, is at a virtual standstill. As just one example, the antidepressants on the market today are no more effective at reversing the mood disorder than those that first became available in the 1950s.

New thinking is desperately needed to aid the estimated 14 million American adults who suffer from severe mental illness. Innovation would likely accelerate if pharmacologists did not have to confront an antiquated legal framework that, in effect, declares off-limits a set of familiar compounds that could potentially serve as the chemical basis for entire new classes of drugs.

LSD, ecstasy (MDMA), psilocybin and marijuana have, for decades, been designated as drugs of abuse. But they had their origins in the medical pharmacopeia. Through the mid-1960s, more than 1,000 scientific publications chronicled the ways that LSD could be used as an aid to make psychotherapy more effective. Similarly, MDMA began to be used as a complement to talk therapy in the 1970s. Marijuana has logged thousands of years as a medicament for diseases and conditions ranging from malaria to rheumatism.

National laws and international conventions put a stop to all that. The Controlled Substances Act of 1970 declared that these drugs have “no currently accepted medical use” and classified them in the most stringently regulated category of controlled substances: Schedule I. The resulting restrictions create a de facto ban on their use in both laboratories and clinical trials, setting up a catch-22: these drugs are banned because they have no accepted medical use, but researchers cannot explore their therapeutic potential because they are banned. Three United Nations treaties extend similar restrictions to much of the rest of the world.

The decades-long research hiatus has taken its toll. Psychologists would like to know whether MDMA can help with intractable post-traumatic stress disorder, whether LSD or psilocybin can provide relief for cluster headaches or obsessive-compulsive disorder, and whether the particular docking receptors on brain cells that many psychedelics latch onto are critical sites for regulating conscious states that go awry in schizophrenia and depression.

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