Latest research on demography released by Chinese researchers shows that Chinese women’s lifelong nulliparity rate has reached the proportion of 5.16 percent, lower than that of developed countries, ...

Schonfeld SJ, Hartge P, Pfeiffer, RM, et al. An aggregated analysis of hormonal factors and endometrial cancer risk by parity. Cancer 2012 Dec 20. doi: 10.1002/cncr.27909. [Epub ahead of print] It is ...

—Evidence from epidemiological studies suggest that different histological types of ovarian cancer have different risk factors. This is consistent with the hypotheses that different ovarian cancer ...

Pregnancy may reduce breast cancer risk through induction of persistent changes of the mammary gland that make the breast less susceptible to carcinogenic factors. It is not known to what extent the ...

The strength of Schonfeld et al is that it combines 4 large prospective trials that included a huge number of patients and cancers. A limitation is that although the women were part of prospective ...