 |
| via doctortipster.com |
"Among women undergoing fertility treatment in the Netherlands between 1980 and 1995, the use of in vitro fertilization (IVF) compared with non-IVF treatment was not associated with increased risk of breast cancer after a median follow-up of 21 years, according to a study appearing in the July 19 issue of JAMA.
For decades, breast cancer has been the most common malignancy among women worldwide. Both exogenous and endogenous estrogens and progestogens have been shown to affect breast cancer risk. Since IVF procedures temporarily cause decreased estradiol and progesterone levels, as well as strongly elevated hormone levels, IVF might influence breast cancer risk.
Because of the high incidence of breast cancer and the large numbers of women undergoing ovarian stimulation for IVF, even a small risk increase would have important public health implications. Previous studies of breast cancer risk after IVF treatment were inconclusive due to limited follow-up.
Alexandra W. van den Belt-Dusebout, Ph.D., of the Netherlands Cancer Institute, Amsterdam, and colleagues assessed long-term risk of breast cancer after ovarian stimulation for IVF among 19,158 women who started IVF treatment between 1983 and 1995 (IVF group) and 5,950 women starting other fertility treatments between 1980 and 1995 (non-IVF group).
The median age at end of follow-up was 54 years for the IVF group and 55 years for the non-IVF group. The incidence of invasive and in situ breast cancers in women who underwent fertility treatments was obtained through linkage with the Netherlands Cancer Registry (1989-2013)..."
Learn more:
No comments:
Post a Comment