Breast Cancer Causes And Health Effects

Oral Contraceptives

The development of certain types of hormone-receptive-positive breast cancers can be caused by an individual's use of oral contraceptives. Oral contraceptives are medications containing hormones that are taken to prevent pregnancy. Birth control pills accomplish this by stopping the regular ovulation cycle and inhibiting the ability of sperm to pass through a woman's cervix. Oral contraceptives that are a combination of estrogen and progesterone are more likely to cause breast cancer than other types of birth control pills. In addition, increased risk of breast cancer is also associated with the use of a triphasic type of birth control pill that changes hormone doses three times during the individual's monthly cycle. Estrogen and progesterone are known to stimulate the initiation, development, and expansion of certain types of breast cancer. Because oral contraceptives contain synthetic forms of such hormones, they make a woman taking them more likely to develop these kinds of hormone-receptive-positive breast cancers.

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