High Levels Of Hormones During Pregnancy Associated With Higher Risk For HR-Negative
 

Increased concentrations of the pregnancy hormones estradiol and progesterone were associated with an increased risk for hormone receptor-negative breast cancer diagnosed before age 50, according to the results of a nested case-control study presented at the 11th Annual AACR International Conference on Frontiers in Cancer Prevention Research. Annekatrin Lukanova, M.D., Ph.D...

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