Ignorance of anti-doping rules and regulations is no excuse and athletes should be responsible for what they consume, says well-known physician and Chairman of the National Anti-Doping Commission Dr. Adrian Lorde.During an interview with Barbados TODAY, Lorde said that 21-year-old United States of America sprinter Sha’Carri Richardson - who received a one-month suspension for smoking marijuana - should have known better and been more responsible for her actions.“I think it was irresponsible of her knowing that trials were going on, regardless of what happened to her, death or whatever, she should not have used marijuana and expect it not to be in her system. The athlete is responsible for whatever is in their system. But it is not a good enough excuse to get away from (being suspended).