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Diet diversity and nutrient intake.

E Randall, M Z Nichaman, C F Contant

Journal of the American Dietetic Association

|July 1, 1985

Summary

This summary is machine-generated.

Dietary nutrient intake is linked to the number of foods consumed and overall calories. Nutrient density also plays a role, with caloric intake and density influencing specific nutrient levels in adults.

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Area of Science:

Nutrition Science
Dietary Assessment

Background:

Dietary variety is traditionally considered crucial for nutrient adequacy.
Emerging dietary assessment tools suggest fewer foods may suffice for nutrient intake classification.

Purpose of the Study:

To investigate the relationship between diet diversity, caloric intake, nutrient density, and selected nutrient levels.
To determine the relative contributions of these factors to nutrient intake in young adults.

Main Methods:

Analysis of 24-hour dietary recall data from 1,747 white men and 1,898 white women (ages 18-34) from NHANES II.
Examination of nutrient intake in relation to the number of foods consumed, total caloric intake, and nutrient density.

Main Results:

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Nutrient intake showed a direct correlation with the number of foods eaten, total calories, and nutrient density.

Higher caloric intake significantly explained differences in fat, saturated fat, and potassium intake.

Nutrient density was more critical for explaining differences in cholesterol, calcium, and vitamin A intake.

Both caloric intake and nutrient density impacted sodium intake.

Conclusions:

Diet diversity, caloric intake, and nutrient density are key determinants of nutrient levels.
Overall diet diversity may estimate some nutrient intakes, while others require nutrient-specific indices.
Understanding food patterns high in specific nutrients can improve dietary assessment tools.