A team of scientists from the Second Xiangya Hospital of Central South University in China found that early pregnancy, childbirth, menopause and lower reproductive life expectancy were associated with a higher risk of lung cancer in women who smoke. Researchers suggest that these factors indicate increased estrogen levels in the body, which in turn increase the negative effects of smoking. In this respect reports MedicalXpress.
Scientists analyzed data from more than 273,000 British men and women to examine the link between individual reproductive factors and the risk of developing lung cancer. During the 12-year follow-up period, 1,182 cases of lung cancer in women were recorded. Researchers found that smokers who started menstruating early (before age 11) or entered menopause (before age 46-49) and who had their first child at a very young age (before age 20) had higher estrogen levels and smoked more cigarettes. They are more likely to get lung cancer than women with normal hormonal levels. Researchers believe that increased hormonal levels may be an indirect cause of lung cancer, as it increases the effects of bad habits on the body.
Previously I learnedHe says smoking causes depression.
Source: Gazeta
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