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  • Breastfeeding may lower risk of childhood leukemia, study suggests

    Breastfeeding for six months or longer was associated with a lower risk of childhood leukemia compared with children who were never breastfed or who were breastfed for a shorter time, according to an article published online by JAMA Pediatrics.

    Leukemia is the most common childhood cancer and accounts for about 30 percent of all childhood cancers. Still, little is known about its cause. Breast milk is meant to exclusively supply all the nutritional needs of infants and current recommendations include exclusively breastfeeding for the first six months of life to optimize growth, development and health.

    Efrat L. Amitay, Ph.D., M.P.H., and Lital Keinan-Boker, M.D., Ph.D., M.P.H., of the University of Haifa, Israel, reviewed the evidence in 18 studies on the association between breastfeeding and childhood leukemia.

    In a review of all 18 studies, the authors found breastfeeding for six months or longer was associated with a 19 percent lower risk compared with no breastfeeding or breastfeeding for a shorter period of time. A separate analysis of 15 studies found that ever being breastfed compared with never being breastfed was associated with an 11 percent lower risk of childhood leukemia.

    The authors suggest several biological mechanisms of breast milk may explain their results, including that breast milk contains many immunologically active components and anti-inflammatory defense mechanisms that influence the development of an infant's immune system.

    "Because the primary goal of public health is prevention of morbidity, health care professionals should be taught the potential health benefits of breastfeeding and given tools to assist mothers with breastfeeding, whether themselves or with referrals to others who can help. The many potential preventive health benefits of breastfeeding should also be communicated openly to the general public, not only to mothers, so breastfeeding can be more socially accepted and facilitated. In addition, more high-quality studies are needed to clarify the biological mechanisms underlying this association between breastfeeding and lower childhood leukemia morbidity," the study concludes.

    Source of this article:
    The JAMA Network Journals. (2015, June 1). Breastfeeding may lower risk of childhood leukemia, study suggests. ScienceDaily. Retrieved August 11, 2015 from www.sciencedaily.com/releases/2015/06/150601122426.htm

    Image Source:
    "Image courtesy of Jomphong/ FreeDigitalPhotos.net"

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