Measures of Dietary Fat and Energy Absorption in Healthy Adults.

Abstract:

OBJECTIVES:Existing reference ranges for stool fat and energy absorption were developed using subjects in controlled environments on precise diets. This study measured energy and fat absorption in healthy, community-dwelling adults eating a moderate-to-high fat American diet via stool- and serum-based methods. METHODS:This was a secondary analysis of healthy subjects recruited as the comparison group in a chronic pancreatitis study. Subjects recorded dietary intake and collected stool over 3-day periods. Stool was analyzed for fat content using the coefficient of fat absorption and for energy content using bomb calorimetry. The malabsorption blood test (MBT) was used to measure dietary fat absorption. RESULTS:Nineteen subjects had mean daily stool measures of 143 g wet weight, 4.1 g of fat, and 178 kcal. The mean coefficients of fat and energy absorption were 96% and 93%, respectively. The mean MBT area under the curve cut-point was greater than 8 mg·h/dL. CONCLUSIONS:This study confirms the historical reference range for the coefficient of fat absorption in contemporary healthy, community-dwelling adults on a moderate-to-high fat diet. The study contributes to the development of reference range values for multiple bomb calorimetry-based outcomes of stool energy losses and to the serum-based MBT as a promising method for measuring fat absorption.

journal_name

Pancreas

journal_title

Pancreas

authors

Bashaw H,Brownell JN,Schall JI,Stallings VA

doi

10.1097/MPA.0000000000001587

subject

Has Abstract

pub_date

2020-07-01 00:00:00

pages

845-854

issue

6

eissn

0885-3177

issn

1536-4828

pii

00006676-202007000-00020

journal_volume

49

pub_type

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