Journal
BRITISH JOURNAL OF CANCER
Volume 93, Issue 3, Pages 379-384Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.bjc.6602706
Keywords
child; leukaemia; acute lymphoblastic leukaemia; breastfeeding; infection
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Funding
- NIEHS NIH HHS [P42 ES004705, R01 ES009137, R01 ES09137] Funding Source: Medline
- NCHHSTP CDC HHS [PS42 ES04705] Funding Source: Medline
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The risk of childhood acute lymphoblastic leukaemia (ALL) was investigated in relation to breastfeeding patterns in the Northern California Childhood Leukaemia Study. Data collected by self-administered and in-person questionnaires from biological mothers of leukaemia cases (age 0-14 years) in the period 1995-2002 were matched to birth certificate controls on date of birth, sex, Hispanic ethnic status, and maternal race. Ever compared to never breastfeeding was not associated with risk of ALL at ages 1-14 years (odds ratio = 0.99; 95% CI = 0.64 - 1.55) and ages 2 - 5 years (OR = 1.49; 95% CI = 0.83 - 2.65). Various measures of breastfeeding duration compared to absence of breastfeeding also had no significant effect on risk. Complimentary feeding characteristics such as type of milk/formula used and age started eating solid foods among breastfed children were not associated with ALL risk. This study provides no evidence that breastfeeding affects the occurrence of childhood ALL.
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