There have been studies on people as well, with encouraging results: http://stm.sciencemag.org/content/9/377/eaai8700 http://stm.sciencemag.org/content/9/377/e

There have been studies on people as well, with encouraging results: http://stm.sciencemag.org/content/9/377/eaai8700 http://stm.sciencemag.org/content/9/377/eaai8700 as well as https://www.sciencedirect.com/science/article/pii/S1550413118302535 https://www.sciencedirect.com/science/article/pii/S155041311... Still, more work needs to be done.