September 14 (Hfrance.fr) - A World Anti-Doping Agency (WADA) advisory group to examine whether cannabis should remain a substance banned, a move that comes after US track and field star Sha 'Carri Richardson missed the Tokyo Games after testing positive. Scientific reviewwill launch next year, WADA said on Tuesday. Cannabis is currently banned in competition and will continue to be so in 2022, he added. Richardson has tested positive for one product chemical found in cannabis during the US Olympic track and field trials in June, which wiped out its test results. She was also given a one-month suspension. The 21-year-old, who had been considered one of the best contenders in the 100 meters, has declared to have consumed cannabis to cope with the death of his mother. The suspension aroused a wave of sympathy and calls anti-doping rule review, including by the US Anti-Doping Agency. learn more Report by Rory Carroll in Los Anfreezes; edited by Richard Pullin Our standards: Thomson Hfrance.fr's principles of trust.