Scientists are engineering yeast to brew a cocktail of marijuana chemicals

David Sinclair, Harvard Medical SchoolYeast cells.

We use yeast to make the staples of life: bread, beer, and wine.

Now, researchers from the Technical University of Dortmund in Germany have engineered yeast to generate some notable chemicals in marijuana, including THC, which is mostly responsible for the marijuana's high, and cannabidiol.

And that's just the start. The work could unlock the true potential for medical marijuana — or for actually deriving medicine from the more than 80 cannabinoids (and more than 500 other chemical compounds!) found in the plant.

How this works

Yeast — a tiny microorganism that's classified as a fungus — wields a transformative and seemingly magical power to consume one substance and turn it into another.

Recently, scientists realized that genetically modified strains of yeast could turn sugar into opiates, essentially making "home-brewed heroin," to the consternation of the US Drug Enforcement Administration...

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