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Previous Volume 330:136-137 January 13, 1994 Number 2 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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Two decades ago the relation of certain reproductive characteristics to the risk of breast cancer appeared to be well established. Nulliparity, an early age at menarche, an older age at menopause, and an older age at the first full-term pregnancy were associated with an increased risk, whereas oophorectomy at an early age was known to be protective¹. These risk factors are still recognized². The number of full-term pregnancies, age at the time of full-term pregnancies after the first, and lactation were considered to have little or no independent effect on the incidence of breast cancer once the associations . . . [Full Text of this Article]

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