A case-control study of nitrate in drinking water and non-Hodgkin's lymphoma in Minnesota.
Nitrate in drinking water has been implicated as a possible risk factor for non-Hodgkin's lymphoma. The authors examined the association between non-Hodgkin's lymphoma and waterborne nitrate through a population-based case-control study of white men in Minnesota. The authors, by linking residential histories with community water records, estimated average long-term exposure to nitrate in drinking water from 1947 to 1975 for 73 cases diagnosed between 1980 and 1982 and for 147 controls who used community water supplies. No association was found between nitrate levels in community water supplies and non-Hodgkin's lymphoma within the range of study exposures (median of highest exposure category = 2.4 mg nitrate/l [range = 0.1-7.2 mg/l]). The findings provide some safety assurance for those who use water systems that have nitrate levels that are less than 2.4 mg/l.
Freedman
D M
DM
Radiation Epidemiology Branch, National Cancer Institute, Bethesda, Maryland 20892, USA.
Cantor
K P
KP
Ward
M H
MH
Helzlsouer
K J
KJ
D000328:Adult; D017677:Age Distribution; D000368:Aged; D016022:Case-Control Studies; D016001:Confidence Intervals; D004326:Drinking; D005260:Female; D006801:Humans; D015994:Incidence; D016015:Logistic Models; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D008910:Minnesota / Q000453:epidemiology; D009566:Nitrates / Q000009:adverse effects*; D016017:Odds Ratio; D011159:Population Surveillance; D012016:Reference Values; D012307:Risk Factors; D017678:Sex Distribution; D014877:Water Pollution, Chemical / Q000009:adverse effects*; D014881:Water Supply / Q000032:analysis
D009566:Nitrates