Low intakes of vegetables and fruits, especially citrus fruits, lead to inadequate vitamin C intakes among adults

Auteur(s) :
Johnston CS., Hampl JS., Taylor CA.
Date :
Juil, 2000
Source(s) :
European journal of clinical nutrition. #54:7 p573-578
Adresse :
"HAMPL JS,ARIZONA STATE UNIV,DEPT NUTR;BOX 872502;TEMPE,AZ 85287 USA. Jeff.Hampl@asu.edu "

Sommaire de l'article

Objective:
To determine vitamin C intakes among adults and to identify differences in dietary intake associated with vitamin C consumption.

Design:
This cross-sectional study compared Vitamin C intake, nutrient intake, and food group choices of adults with low (< 30 mg/d), marginal (30-60 mg/d), and desirable (> 60 mg/d) vitamin C intakes.

Subjects:
Data from 2472 men and 2334 women aged 25-75 y were obtained from the 1994-1996 Continuing Survey of Food Intakes by Individuals (CSFII).

Results:
Overall, 18% of the sample had low vitamin C intakes, 24% had marginal intakes, and 58% had desirable intakes. In addition to consuming less vitamin C, adults with low vitamin C intakes consumed significantly less (P less than or equal to 0.001) energy-adjusted (ie nutrient/1000 kcal) folate, fiber, beta-carotene, and vitamin B-6, and significantly more (P < 0.001) fat. Compared to adults with low intakes. adults with desirable vitamin C intakes consumed significantly more (P less than or equal to 0.001) high-vitamin C fruit juice and low-vitamin C vegetables, while consuming significantly less (P less than or equal to 0.009) soft drinks, coffee/tea and alcoholic beverages. On average, adults with desirable vitamin C intakes consumed more than five daily servings of vegetables and fruits, of which more than one was citrus. Adults with low and marginal vitamin C intakes consumed less than one-fifth of a serving of citrus.

Conclusions:
A considerable number of adults under-consume vitamin C and total vegetables and fruits. Nutritionists should continue to promote five to nine daily servings of vegetables and fruits, at least one of which should be rich in vitamin C.

Source : Pubmed
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