Smoking of hundred cigarettes essentially increases probability of development of a cancer of a mammary gland.
At a following investigation phase scientists intend to find out, what influence on development of a cancer of a mammary gland renders quantity of the smoked cigarettes.
The collective of scientists from Clinics Majo (USA) has compared risk factors at 1 225 women who were ill with a cancer of a breast, and 6 872 patients for whom illness is not diagnosed. Results of research have shown, 10 % of examinees smoked at the moment of experiment, 9 % have left an addiction some time ago, and 81 % never it had. At the women who have smoked in total during a life hundred and more cigarettes, the risk of occurrence of disease has appeared much above, than at other.
However the probability of occurrence of malignant tumours in a breast considerably decreases, as soon as the woman gives up smoking.
It has been established also that reception of oral contraceptives within 11 years and more increases risk of development of a cancer of a breast by 200 %. At the women passing postclimacteric hormonal therapy, risk it is raised on 81 %. Besides, every year lives the probability of occurrence of a cancer grows on 2 %. And гистерэктомия (uterus removal), on the contrary, reduces risk to 35 %.
At a following investigation phase scientists intend to find out, what influence on development of a cancer of a mammary gland render smoking in pre- and the postclimacteric period, quantity of the smoked cigarettes and passive smoking.
Let's remind also that refusal of smoking quickly reduces risk of occurrence of heart diseases. In some weeks after refusal of cigarettes at women the level of a factor некроза tumours (TNF) and two other related substances is reduced. The maintenance in blood of S-jet fiber (CRP) which presence testifies to inflammatory process in an organism, and interlejkina-6, also the immune answer participating in realisation and inflammatory reaction Besides, decreases.
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