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Birth control pills associated with breast cancer risk in BRCA1 mutation carriers

A study found that long-term oral contraceptive use is associated with a 33% increase in breast cancer risk among women with BRCA1 mutations, particularly those who started using contraceptives before age 30. In contrast, no significant increase in breast cancer risk was observed in women with BRCA2 mutations.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateDec 3, 2002

Good news about oral contraceptives

A new study of over 10,000 women nationwide found no increased risk of breast cancer from taking birth control pills. Meanwhile, similar studies suggest oral contraceptives may reduce the risks of uterine and ovarian cancers by as much as 40%.

SourceJohns Hopkins Medicine·JournalNew England Journal of Medicine·DateJun 26, 2002

Progestin in oral contraceptives associated with lower risk of ovarian cancer

A new study analyzing oral contraceptive use among women with epithelial ovarian cancer found a significant association between progestin levels and reduced risk. Women using low-progestin/high-estrogen contraceptives were more likely to develop ovarian cancer compared to those using high-progestin/high-estrogen contraceptives.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateJan 1, 2002

Hormone progestin protects against ovarian cancer

A study led by Joellen Schildkraut at Duke University Medical Center found that oral contraceptives with higher levels of progestin may be more protective against ovarian cancer than those with lower progestin potency. Higher progestin levels were associated with a significant reduction in risk, even for short periods of use.

SourceDuke University Medical Center·JournalJNCI Journal of the National Cancer Institute·DateJan 1, 2002

A fish named Wayne-Wanda?

Low levels of estrogen hormones in water may be responsible for the feminization of wild fish, according to a recent study. Researchers found that very low concentrations of estrogenic compounds released from sewage treatment plants were causing intersex and altered sex ratios in aquarium fish.

Researchers find large discrepancies in spouses' reports on birth control

A recent study found significant discrepancies between spouses' reports on birth control methods. The research analyzed data from 23 countries and revealed that couples who had discussed family planning or where the wife had higher education levels were more likely to concur on the contraceptive method. However, concurrence was lower a...

SourceJohns Hopkins Bloomberg School of Public Health·JournalStudies in Family Planning·DateJul 16, 2001

Teens' second pregnancy rates lower with long-term contraceptives

A study published in American Journal of Preventive Medicine found that long-term contraceptives, such as Norplant, reduced second pregnancy rates among teens. Among the participants who chose these methods, only 11% became pregnant within a year, compared to 25% of those using oral contraceptives and 38% of those not using birth control.

SourceCenter for Advancing Health·JournalAmerican Journal of Preventive Medicine·DateJul 1, 2001

Oral contraceptive use does not affect bone mass

A long-term study of 62 white female participants aged 12-20 found that oral contraceptive pill (OCP) use did not impact their peak bone mass or hip bone mineral density, contrary to theoretical concerns. The findings are significant as they address the needs of young women who are concerned about body changes during adolescence.

SourcePenn State·JournalFertility and Sterility·DateNov 27, 2000

Low-dose oral contraceptives are as protective against ovarian cancer as are older, high-dose pills, find University of Pittsburgh researchers

Researchers at the University of Pittsburgh Medical Center found that low-dose oral contraceptives offer a 40% reduced risk of ovarian cancer, similar to high-dose pills. The protection begins soon after use and continues for at least 30 years after stopping.

SourceUniversity of Pittsburgh Medical Center·JournalAmerican Journal of Epidemiology·DateJul 23, 2000

Biotech Approach To Feral Cat Problem Devised

A team of researchers has successfully created a genetically engineered Salmonella bacterium that can serve as an oral contraceptive for feral cats. The vaccine induces antibodies that block sperm fertilization, potentially helping to control the nation's stray cat population and mitigate their impact on songbird populations.

Epilepsy Drugs Can Lead To Unplanned Pregnancy

A Johns Hopkins study found that over 1 in 5 neurologists and obstetricians had patients with epilepsy who developed unwanted pregnancies due to anti-epilepsy drugs interfering with birth control pills. Increasing birth control medication levels or switching to non-interfering medications can reduce the risk of unplanned pregnancy.