Women and Lymphoma Risk Studies

A recent study in the American Journal of Epidemiology looked at the lymphoma risk of women based on when they received their first period and by how many children they have. The envelope please:

- Women with at least four pregnancies during their lifetime were 40% less likely to develop NHL than were women without children. Moreover, the risk of NHL appeared to fall as pregnancy number increased.

- Starting periods at age 15 or later increased the risk of NHL overall and diffuse NHL by 50% and 70%, respectively, compared with menarche before age 12, the investigators found.

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