This study opens the way to monitor neurotransmitter levels and changes in those levels over a long period of time. This would be a definitive way to track the effect of amino acid therapy, and possibly even give information about proper dosing levels. Of course, the down side is that you’ve got to have a sensor implanted in your brain! Given that this is already happening with some patients, it seems that it would be easy to add these sensors at the same time in order to track response.

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