About The Study: In this cohort study including 309,000 Danish children, longer duration of exclusive breastfeeding was associated with reduced risk of childhood B-cell precursor-acute lymphoblastic leukemia, corroborating results of previous case-control investigations in this field. To inform future preemptive interventions, continued research should focus on the potential biologic mechanisms underlying the observed association.
Authors: Signe Holst Søegaard, Ph.D., of the Danish Cancer Society in Copenhagen, is the corresponding author.
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(doi: 10.1001/jamanetworkopen.2024.3115)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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