What Is Caffeine?

John Dunsmuir takes us on the journey coffee makes through our body.

Three hundred tonnes of caffeine are consumed globally each year, making it the world’s most popular psychoactive drug. But what makes this insecticide so popular?

The first credible source of coffee drinking comes from Fifteenth Century Sufi monasteries in modern day Yemen. It quickly spread via trade throughout the Mediterranean Basin, entering Europe via Italy.

Caffeine closely resembles the structure of a naturally occuring chemical in the brain known as Adenosine

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