91.   Other factors that seem to reduce breast cancer risk are pregnancy at an early age and prolonged nursing.

92.   PCBs, or polychlorinated biphenyls, are a group of industrial chemicals that are suspected of posing a cancer risk to humans and causing other health problems.

93.   Previous studies have been conflicting, with some showing a modest increase in cancer risk and others finding no link.

94.   PCBs can accumulate in the tissues of fish and has been linked to cancer risk in humans.

95.   PCBs, polychlorinated biphenyls, pose a cancer risk to people who eat fish or drink water contaminated with them, according to the EPA.

96.   Previous studies have found a similar link between moderate drinking and increased breast cancer risk.

97.   Researchers now hope to find drugs that will have the same estrogen-like effect in the osteoblast cell, without the elevated cancer risk associated with estrogen.

98.   Researchers consistently associate eating vegetables with lowering cancer risk.

99.   She has argued that women can reduce their ovarian and endometrial cancer risks by taking conventional birth-control pills rather than the constant hormone variety.

100.   Some cancer risks, however, may be increased by the pill.