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Gut bacteria interfere with medicine

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OPINION: As a microbiologist, I'm a bit biased about how important microbes are. OK, maybe very biased.

But even I was blown away by a new study that shows how gut bacteria interfere with the medicines we take.

Parkinson's is a progressive neurodegenerative condition caused by not having enough dopamine in the brain. One treatment works by trying to replenish people's natural dopamine levels.

As dopamine can't cross the blood-brain barrier, people are given Levodopa (L-dopa) which can get to the brain. There it's converted to dopamine by a human enzyme called aromatic amino acid decarboxylase (AADC).

* Your poo is........

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