For many years, there was no doubt that pregnancy and breastfeeding helped reduce a woman's chance of getting breast cancer. Several studies supported this view, showing a positive effect.
However, a study led by Patricia Coogan, M.D., at Boston University School of Medicine in Brookline, Massachusetts, challenges this idea. The study found that breastfeeding offers little or no protection against breast cancer. The researchers examined the breastfeeding history of 446 women with breast cancer and compared it with that of 1,471 women who were free of cancer. Both groups had similar rates of breastfeeding — 83% in the cancer group and 85% in the healthy group — and similar risks of developing the disease. Previous studies suggested that breastfeeding might reduce breast cancer risk because it lowers estrogen levels, which are associated with higher risk. Dr. Kogan stressed that breastfeeding still offers many real benefits for babies and mothers. It should be encouraged for those reasons, regardless of its effects on breast cancer risk.
At this point, the main takeaway is that breastfeeding does no harm. Even if future research shows it doesn't protect against cancer, the benefits for both mom and baby outweigh any minor inconveniences or discomforts.
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WOMEN'S HEALTH
