A - just because I cite a news source you don't like, it doesn't mean it "invalidates" the entire article. Your logic doesn't make sense.

Anyway, if you read the article I linked to properly, you'd see that they cite a <strong>Mayo Clinic study</strong>, which is titled "Oral Contraceptive Use as a Risk Factor for Premenopausal Breast Cancer: A Meta-analysis."

Here it is if you want to read further: http://mayoclinicproceedings.com/content/81/10/1290.full.pdf+html

Is the Mayo Clinic reputable enough for you?