Int J Vitam Nutr Res
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Int J Vitam Nutr Res · Jan 1993
Comparative StudyUse of smokeless tobacco and cigarettes--effects on plasma levels of antioxidant vitamins.
In a population-based sample of 40-49-year-old men, plasma levels of antioxidant vitamins were measured in 17 regular users of smokeless tobacco (oral snuff), 26 regular smokers and 54 non-tobacco users. Vitamin intake by tobacco use was assessed by a food frequency questionnaire in 174 men in the 40-49 year age range. ⋯ Smokers, but not snuff dippers, had plasma levels of ascorbate significantly below those expected from ascorbic acid intake, indicating enhanced expenditure of ascorbate in smokers but not in snuff dippers. The results show that plasma levels of antioxidant vitamins are not reduced in snuff dippers as they are in smokers, possibly as the combined result of higher intake and lower expenditure of ascorbate and tocopherols in those who use smokeless tobacco.
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Int J Vitam Nutr Res · Jan 1989
Relationship between serum ferritin, erythrocyte protoporphyrin and transferrin saturation in Mauritanian free living children.
Serum ferritin, serum iron, total iron-binding capacity (TIBC) and erythrocyte protoporphyrin were measured in a group of 69 children (6.4 +/- 3.6 years) living in a rural area of Mauritania. The predictive value of low serum ferritin was calculated for each iron parameter. ⋯ Nearly 35% of children had biochemical evidence of iron deficiency, i.e. 2 abnormal independent iron parameters or more, including serum ferritin of less than 12 micrograms/l. Nearly 32% had probable iron deficiency, i.e. 2 abnormal independent iron parameters, with a serum ferritin value between 13 and 50 micrograms/l.
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Int J Vitam Nutr Res · Jan 1984
Comparative StudyMaternal diet and mental retardation in southern Georgia, USA.
The diet of each of 250 mothers was correlated with the I. Q. (intelligence quotient) of her child. When the I. ⋯ Q. of 70, all mothers consumed a similar diet--one with a smaller amount and variety of fruits and vegetables, but larger amounts of yams, greens, corn, rice and dry legumes. This diet was uniquely deficient in none of the common nutrients. It seems more possible, therefore, that the correlation with diet could be due to the presence of a toxicant, such as aflatoxin.