This post on Mind Hacks discusses a new drink called "JonesGABA" that claims to increase "focus and clarity" because it contains small amounts of the neurotransmitter GABA. The post briefly describes why we (and our students) should be skeptical about the claim: the blood-brain barrier and the company's fairly weak study supporting their claim. This could be a good, engaging critical thinking exercise for students during the Bio unit (especially if you can get a can of JonesGABA to bring into class!)
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