DDT and Breast Cacner

A lot of the research coming out lately seems to indicate that the time of exposure to chemicals is relevant to developing disease later in life. In some instances, in utero exposure is the issue. This study showed that women who were exposed to DDT before the age of 14 have a much higher rate of breast cancer. Women who were exposed after the age of 14 did not have a significantly higher rate of breast cancer. Here is a link to the study.

So we are really practical and hit this issue all the time in our classes. How do you convince a young mind, that may not have fully developed cause and effect thinking, to avoid exposure to chemicals or not drink and take hormones?!? Now that we have the info and it seems to be coming pretty consistently - what do we do?