Importance of early environmental exposure pinpointed in study of breast cancer development
...tes and the women's homes at the time of birth and menarche (date of first menstruation), and compare this inf...role of environmental exposures during infancy and menarche on health and disease later in life."...Smoking during adolescence could increase risk of breast cancer
...ls. Women who started smoking within five years of menarche (onset of menstruation) were around 1.7 times (70%) more likely to develop breast cancer than non-smokers. Pierre Band comments: "These results-which suggest that human breast tissue is most sensitive to environmental carcinogens during periods of r...Premenopausal breast cancer linked with place of birth, residence at time of menarche
...where they were born and where they lived at their menarche (start of menstruation).The clustering indicates that these women may have been exposed to something in the environment at those times in their lives that increased their risk of developing premenopausal breast cancer, said Daikwon Han, Ph.D., postdo...