http://news.yahoo.com/s/nm/20070622/hl_nm/morningsickness_dc;_ylt=AhlhZMjptD_mfwbP_RBfJx4DW7oF
By Karla Gale
Fri Jun 22, 5:02 PM ET
NEW YORK (Reuters Health) - If there's any good news about morning
sickness, this may be it. Women who experience nausea and vomiting
during pregnancy may have a lower risk of breast cancer later in
life, according to new research.
Dr. Jo Freudenheim from the University at Buffalo in New York
reported the finding this week in Boston, at the annual meeting of
the Society for Epidemiologic Research.
Freudenheim and her colleagues interviewed 1001 women with recently
diagnosed breast cancer, ages 35 to 79, and 1917 "control" subjects
matched to the case patients by age, race and county of
residence.
Several pregnancy-related factors -- pregnancy-induced high blood
pressure, preeclampsia, gestational diabetes, and weight gain --
were evaluated, but had no significant effect on future incidence
of breast cancer.
In contrast, pregnancy-associated nausea and vomiting was
associated with about a 30 percent lower risk of breast cancer.
Greater severity and longer duration of the symptoms reduced the
risk even further.
Freudenheim cautioned, however, that this is an epidemiologic
study, so the findings should not be "over-interpreted."
Confirmation of their findings, she added, will require replication
in other populations.