Nutrition Through the Life Cycle (...

6th Edition
Judith E. Brown
ISBN: 9781305628007



Nutrition Through the Life Cycle (...

6th Edition
Judith E. Brown
ISBN: 9781305628007
Textbook Problem

BMI is a less effective predictor of morbidity and mortality in older than younger adults. Why is BMI a less reliable tool in older adults?

Summary Introduction

To discuss: The reason(s) for BMI being a less reliable tool in older adults than younger adults, based on the effectiveness of predicting morbidity and mortality.

Introduction: Body Mass Index (BMI) is a measurement of the weight and the respective height of an individual. It is an indicator of direct measurement of an individual’s total body fat. BMI is a tool that is used to calculate health risks in an individual.


In older adults, the relationship between obesity, morbidity, and mortality is complicated. In this regard, BMI is not an appropriate tool to measure the content of the fat in that person because fat levels are estimated on the basis of the weight of the individual, which contains both body fat and muscle mass.

Measuring an accurate height is difficult in older adults as their vertebrae get compressed due to kyphosis, which reduces the normal height. Body fat in old age is redistributed in the intra-abdominal region in men...

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