People

Board

The honorary and expert boards of the Ratio think tank. Each member has their own page.

Honorary Board

Pavel Bém

Pavel Bém

MUDr. Pavel Bém is a physician, psychiatrist, and politician with significant experience in public health and addiction studies.

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Michel Kazatchkine

Michel Kazatchkine

Michel Kazatchkine is a distinguished French physician, public health expert, and a prominent figure in public health policy.

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Chokwan Kitty Chopaka

Chokwan Kitty Chopaka

Kitty Chopaka is a renowned advocate for cannabis reform, celebrated for her pioneering work in cannabis education and policy development in Thailand.

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Ethan A. Nadelmann

Ethan A. Nadelmann

Dr. Ethan A. Nadelmann, described by the Rolling Stone as "the point man" for drug policy reform efforts and “the real drug czar,” Ethan Na…

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David Nutt

David Nutt

David Nutt is a leading British neuropsychopharmacologist specializing in the effects of drugs on the brain and behavior.

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Petr Smejkal

Petr Smejkal

MUDr. Petr Smejkal is a renowned Czech epidemiologist and infectious disease specialist with extensive professional and international experience in p…

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Expert Board

MUDr. Pavel Kubů

MUDr. Pavel Kubů

Pavel Kubů, MD, is an expert in medical informatics and addictology, focusing on research and the development of new therapeutic and preventive metho…

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We've changed our name

The Rational Addiction Policy Think Tank (IRAP) is now ratio

Original logo: Rational Addiction Policy Think Tank New logo: ratio

We're changing our brand, not what we do. We remain an independent think tank for evidence-based addiction policy.