Sir, - Dr Desmond Corrigan's address to the Dublin drugs conference (Irish Times, February 8th) seemed to dispel myths about drugs. Dr Corrigan stated that "Cannabis was even more damaging to the heart and lungs than tobacco and it also damaged learning and memory functions." I would like to know where such a recognised pharmacologist got his flawed information about cannabis and would ask him to prove this so called "fact". - Yours, etc.,
Elmwood Avenue, Dublin 6.