Raport WHO o marihuanie - rozdział V

Stosowaniu konopi towarzyszy ryzyko zdrowotne, szczególnie przy codziennym ich używaniu na przestrzeni lat lub dziesięcioleci. Pozostaje duża niepewność czy efekty te można przypisać używaniu wyłącznie konopi oraz jaki jest związek pomiędzy częstością, ilością i czasem używania konopi, a ryzykiem wystąpienia tych efektów. Analogicznie do znanych efektów używania alkoholu i tytoniu, najbardziej prawdopodobnymi skutkami chronicznego zażywania dużych ilości konopi na przestrzeni lat są: rozwój zespołu uzależnienia; zwiększone ryzyko udziału w wypadkach pojazdów mechanicznych; zwiększone ryzyko rozwoju chronicznego kaszlu; zwiększone ryzyko powstania nowotworów układu oddechowego; zwiększone ryzyko urodzenia dziecka o małej wadze, jeżeli używano konopi podczas ciąży oraz, być może, zwiększone ryzyko rozwoju schizofrenii u osób na nią podatnych. Wiele z tych zagrożeń konopie dzielą z alkoholem i tytoniem, co nie jest zaskakujące, jeśli wziąć pod uwagę, że konopie, podobnie jak alkohol, są środkiem odurzającym, który zwykle, podobnie jak tytoń, jest palony.

Przy obecnych formach używania konopie stwarzają o wiele mniej poważne, niż alkohol i tytoń, problemy zdrowotne w zachodnich społeczeństwach. Nie jest to jednak powód do zadowolenia, ponieważ mimo, iż wpływ alkoholu i tytoniu na zdrowie społeczeństwa jest dominujący, to wpływ konopi może wzrosnąć, jeśli powszechność codziennego używania ich w dużych ilościach osiągnie poziom spożycia dużych ilości alkoholu wśród młodzieży lub codziennego palenia papierosów wśród dorosłych.

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