Ginkgo may be the most scrutinized supplement to ever hit health store shelves. There have been hundreds of ginkgo studies, including many classic rats-in-a-maze-type investigations and dozens of human trials. According to Fernando Gomez-Pinilla, a professor of neurosurgery at UCLA and a spokesperson for the Society for Neuroscience, the bulk of these studies point in the same direction: Ginkgo probably can help improve thinking, but not by much. "It won't make you a genius," he says.
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