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The cannabis increases the risk of cancer of the testes to Smoke the cannabis once per week or regularly since adolescence would double the risk of cancer of the testes. In constant increase, this cancer is the most frequent at the men of 15 to 35 years.If the cancer of the testicle only represents 1 to 2% of the masculine cancers, it is however the most frequent at the men of 15 to 35 years. The number of case is in constant increase... all as the East the use of the cannabis. An American survey puts in evidence a possible tie between these two phenomena. The cancer of the testes in constant increaseSince the years 1950, the cancer of the testes is in increase in France but also to the United States, to Canada, in Europe, in Australia and in New Zealand. Two types of germinal tumors exist: the séminomateuses and the non séminomateuses, that represent 60% and 40% of the cases respectively. These last are the most aggressive because they develop themselves very quickly and touch the men between 20 and 35 years. The factors of risk of this illness are the existence of domestic antecedents, the absence of one or the two testes in the purse (cryptorchidie) and the development abnormal of the testicules2,3. One thinks that this cancer finds its origin in part before the birth, when some germ-cells (as those that are responsible for the semen production to the adult age) don't develop himself correctly and become vulnerable to the malignancy. Later, during adolescence and the adult age, the exhibition to some pollutants and to some hormones could play a role also. Cannabis: the big smokers have two times more of cancer riskSeveral studies tried to join the cancer of the testes with the exhibition to different pollutants: phtalates, molecules near of the estrogènes used in the industries of painting, pesticides, detergents, plastic... However in spite of studies on the animal inquiétantes4, no tie has can be demonstrated for the meantime at the man. But among the pollutants until then unknown, one finds the cannabis of which one could already have noted that the consumption increased in the same way to the number of case of this masculine cancer. Besides, the researchers demonstrated that the testes are among the only organs to shelter specific receptors of the tetrahydrocannabinol (THC), active principle of marijuana. Finally, the masculine reproductive system produced a compound close to the cannabis to the anti-cancer properties. He was therefore justified threefold increase to explore the ties more between cannabis and cancer of the testes. To go farther, the team of the Dr Schwartz interrogated 369 men affected by cancer of the testes and 979 men in good health on their consumption of cannabis therefore. While taking in account the influence of the other parameters (alcohol, tobacco addiction, other factors of risk knew the cancer of the testes...), the analysis of the answers demonstrates that hemp has a very meaningful role in the development of the tumors séminomateuses. The smokers of joints would have a risk increased of 70% of cancer of the testes in relation to the non smokers indeed. This danger is nearly doubled at those that smoke weekly manner and/or that began at the time of their puberty! Not to let leave your fertility in smoke...The researchers underline in spite of everything that these results constitute a new track of work at present only. Of ampler studies should confirm with certainty this tie and understand by what mechanisms marijuana can encourage this illness. He will also agree to understand why hemp is associated to only one type only of cancer of the testes. After have been accused to have deleterious effects on the fertilité5,6, the cannabis could see itself therefore assigning a new misdemeanor concerning the reproductive organs. The Dr Schwartz, main author of the survey, recalls that "we know very few things on the effects on the long term of the cannabis, in particular among the big smokers." Facing the tie suggested by his survey, he invites the young to not to mortgage their future health. 2009-02-16
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