Is Dietary Knowledge Enough? Hunger, Stress, and Other Roadblocks to Healthy Eating
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Poor diets and rising obesity rates among Americans have persisted despite increased
awareness and publicity regarding the benefits of a healthy lifestyle. This analysis of
consumer food choice developed a consumer demand model to illustrate how both long-term
health objectives and immediate visceral influences—long intervals between meals
and away-from-home eating—can affect individuals’ food choices. The model predicts
that dietary knowledge will have less influence on food choices in the face of immediate visceral factors. The model predictions were tested using data from the 1994-96 Continuing Survey of Food Intake by Individuals and the companion Diet Health and
Knowledge Survey. Longer intervals between meals and consumption of more food away
from home both contribute to one’s consuming more calories and more calories from
solid fats, alcohol, and added sugars. Longer intervals between meals are also associated with lower diet quality.