There is considerable interest in the possible role of nitrate in gastric carcinogenesis, but little information on nitrate intake around the world.
This is the first study to give comprehensive standardized data on nitrate excretion as a marker of intake, using 48 worldwide population samples.
Urinary nitrate excretion has been shown to be a valid measure of nitrate intake in people under 50.
This report presents data on 24-hour urinary nitrate excretion from urine collections obtained in the INTERSALT study, based on random samples of men and women aged 20-49 from each of 48 population samples in 30 countries.
There was large variation in urinary nitrate excretion both within and between samples ; within-sample (individual) distributions tended to be skewed towards higher values.
Median values of the samples ranged from 0.42 mmol/day (Labrador, Canada) to 3.52 (Beijing, People's Republic of China) in men and 0.44 mmol/day (Colombia) to 3.44 (Beijing) in women.
Overall, median values were higher in men than women by 11% on average (higher in men in 37 of 48 population samples).
Comparison by geographical region of median values for men and women combined showed relatively low values in the samples in North America and Northern Europe (range 0.46-0.88 mmollday), slightly higher values in Western Europe and Africa (0.68-1.11), and intermediate to high values in Southern Europe, Eastern and Central Europe and India (0.86-2.47). (...)
Mots-clés Pascal : Enquête, Nutrition, Consommation alimentaire, Comportement alimentaire, Nitrate, Etude multicentrique, Homme, Excrétion, Urine, Epidémiologie, Etude INTERSALT
Mots-clés Pascal anglais : Inquiry, Nutrition, Food intake, Feeding behavior, Nitrates, Multicenter study, Human, Excretion, Urine, Epidemiology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0316682
Code Inist : 002B29B. Création : 10/04/1997.