Larsson SC, Orsini N, Wolk A. Milk, milk products, and lactose intake and ovarian cancer risk: A meta-analysis of epidemiological studies. Int J Cancer; Published online August 5, 2005. Available via Wiley InterScience at http://www.interscience.wiley.com/journal/ijc.

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PCRM Breaking Medical News:

A new meta-analysis investigated the association between milk consumption and risk of ovarian cancer. Conducted by researchers at Sweden's Karolinska Institute, the new study found that the strongest evidence of the milk-cancer association came from 3 prospective studies. Every 13 grams of lactose (the amount in one glass of milk) ingested on a daily basis increased ovarian cancer risk by 13 percent. Case-control studies are a weaker line of evidence and produced conflicting results. Prior investigators have suggested that lactose, the dairy sugar, may have a toxic effect on ovarian tissues in women who are unable to rapidly metabolize it.

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