Scientists show cognitive enhancing drugs can improve chess play
▻https://medicalxpress.com/news/2017-03-scientists-cognitive-drugs-chess.html
The study shows how certain drugs can alter and even improve the way in which the brain processes complex information. As applied to chess (and other fields), this supports the possibility pharmaceutical enhancement giving a player a competitive advantage. The World Chess Federation, FIDE, recognised this by introducing an anti-doping code in 2014