Results from an international case-control study of childhood brain tumors: The role of prenatal vitamin supplementation

Susan Preston-Martin, Janice M. Pogoda, Beth A. Mueller, Flora Lubin, Baruch Modan, Elizabeth A. Holly, Graziella Filippini, Sylvaine Cordier, Raphael Peris-Bonet, Won Choi, Julian Little, Annie Arslan

Research output: Contribution to journalArticlepeer-review

Abstract

An international case-control study of primary pediatric brain tumors included interviews with mothers of cases diagnosed from 1976 to 1994 and mothers of population controls. Data are available on maternal vitamin use during pregnancy for 1051 cases and 1919 controls from eight geographic areas in North America, Europe, and Israel. Although risk estimates varied by study center, combined results suggest that maternal supplementation for two trimesters may decrease risk of brain tumor (odds ratio [OR] 0.7, 95% confidence interval [CI] 0.5-0.9), with a trend of less risk with longer duration of use (p trend = 0.0007). The greatest risk reduction was among children diagnosed under 5 years of age whose mothers used supplements during all three trimesters (OR 0.5, CI 0.3-0.8). This effect did not vary by histology and was seen for supplementation during pregnancy rather than during the month before pregnancy or while breast feeding. These findings are largely driven by data from the United States, where most mothers took vitamins. The proportion of control mothers who took vitamins during pregnancy varied tremendously: from 3% in Israel and France, 21% in Italy, 33% in Canada, 52% in Spain and 86 to 92% at the three U.S. centers. The composition of the various multivitamin compounds taken also varied: the daily dose of vitamin C ranged from 0 to 600 mg, vitamin E ranged from 0 to 70 mg, vitamin A ranged from 0 to 30,000 IU, and folate ranged from 0 to 2000 μg. Mothers also took individual micronutrient supplements (e.g., vitamin C tablets), but most mothers who took these also took multivitamins, making it impossible to determine potential independent effects of these micronutrients.

Original languageEnglish
Pages (from-to)887-892
Number of pages6
JournalEnvironmental Health Perspectives
Volume106
Issue numberSUPPL. 3
Publication statusPublished - 1998

Keywords

  • Brain neoplasms
  • Childhood neoplasms
  • Prenatal exposures
  • Vitamin supplements

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Public Health, Environmental and Occupational Health

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