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Case-control study: OC use before age 20 years tied to early breast cancer.(News)
ORLANDO, FLA. -- Oral contraceptive use by women before age 20 years was a significant risk factor for the development of breast cancer by age 40 in a case-control study in 245 Swedish women with early-onset breast cancer.
Although the risk of early oral contraceptive (OC) use is tentative based on this finding, the result raises enough concern to suggest that women younger than 20 years should avoid using an OC when alternative contraceptive options are available, Helena Jernstrom, Ph.D. said while presenting a poster at the annual meeting of the American Association for Cancer Research.
For example, an OC should probably not be used to treat acne in women younger than 20, said Dr. Jernstrom, professor of oncology at Lund (Sweden) University.
The study included 259 women diagnosed with a first, invasive breast cancer by the time they were 40 years old during 1990-1995 in the South Sweden Health Care Region; 245 of these women were included in the analysis, as well as three age-matched control subjects for each case.
Neither "ever" OC use nor current OC use was associated with breast cancer. But case subjects were 2.16-fold more likely to have used an OC before age ...
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...Neither "ever" OC use nor current...associated with breast cancer. Case subjects...posed by early OC use was greatest...who developed breast cancer by the time they...Family history of breast cancer. Among these women, OC use before age...
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- Magazine article from: OB/GYN Clinical Alert December 1, 2000 700+ words
...contraceptives may increase the risk of breast cancer in first-degree relatives of women who had breast cancer. Source: Grabrick DM, et...between oral contraceptive (OC) use and the risk of breast cancer in a cohort of women with...
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- Magazine article from: Journal of Environmental Health Mills, Paul K. Yang, Richard January 1, 2006 700+ words
...reported here evaluated breast cancer incidence rates by using...analysis to evaluate breast cancer incidence at the county...function of organochlorine (OC) and triazine herbicide...known risk factors for breast cancer including age, fertility...
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...might adversely affect breast cancer recurrence. The participants...with nonmetastatic breast cancer enrolled in a New...specimens to determine OC concentrations. The...relationship between OC exposure and risk of breast cancer in these women, adipose...
- Oral contraceptives and the risk of breast cancer. (Abstract &...
- Magazine article from: OB/GYN Clinical Alert September 1, 2002 700+ words
...women with invasive breast cancer and 4682 matched controls...multiple aspects of OC use revealed little...increase the risk of breast cancer. In particular...point is why would OC use not raise the risk of breast cancer in older women while...
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- News wire article from: The America's Intelligence Wire October 30, 2006 700+ words
...oral contraceptive (OC) use is associated with premenopausal breast cancer. Included in the...diagnosed with breast cancer during or after 1980...Kahlenborn. "Namely, OC use prior to first...of premenopausal breast cancer. Although the trend...
Source: HighBeam Research, Case-control study: OC use before age 20 years tied to early breast...