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United States Department of Agriculture

Agricultural Research Service

Title: Understanding Variability in Daily Food Intake: Implications for Nutrition Studies and Dietary Recommendations.

item Rumpler, William

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: July 17, 2004
Publication Date: October 28, 2004
Citation: Rumpler, W.V. 2004. Understanding variability in daily food intake: implications for nutrition studies and dietary recommendations. Diabetes Technology Meeting.

Technical Abstract: Three basic types of nutrition studies are routinely conducted to investigate the relationship between the diet and biomarkers of health; Controlled feeding, ad libitum feeding and self reported food intake. Controlled feeding involves the rigorous control of both the quantity and composition of foods as well as the timing of meals consumed by volunteers. Ad libitum feeding studies carefully track food intake while permitting nearly free living food consumption. The most widely applied methodology of collecting dietary information is by using a variety of methods of collecting self reported food intake. The strengths and weaknesses will be discussed as well as the type of data that can be collected using each of these methodologies. One aspect of food intake which is rarely discussed is the natural day to day variability in the amount and composition of foods consumed by an individual. Only a few studies have examined the extent of this day to day variation. The potential impact of this natural variation in intake on both the interpretation of results as well as the conduct of studies will be explored. In addition, implications of the natural variability in food intake on dietary recommendations will be discussed.

Last Modified: 4/22/2015
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