A presença de nitrito e nitrato na dieta diária de escolares do município de São Paulo, SP / The presence of nitrite and nitrate in the daily diet of students - São Paulo, SP

Nitrites and nitrates are substances naturally found in foods either from animal or vegetal source, and also in drinking water. Concern has repeatedly been expressed in the scientific and popular literature about the extent and effects of nitrate and nitrite in our diet. The aim of this study was to estimate the presence of nitrate and nitrite, in the daily diet food of students, applying a questionnaire form asking which of the 25 food items were eaten the day before (diet recall). The students attend from 1st to 8th grade in private or public schools in São Paulo city, State of São Paulo, Brazil (in all turns, with people from 6 to 25 years-old). 6,185 students filled the form and 5,991 informed complete dietary data...