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

Seven-year-old Timothy’s mother takes him to his pediatrician for his annual checkup. His weight is 68 lb (31 kg), plotted at the 95th percentile, and his height is 50 in. (127 cm), between the 75th and 90th percentiles for his age. His body mass index of 19.25 kg/m2 plots at the 95th percentile for his age. His growth percentiles have been increasing over the last several years.

Timothy’s mother expresses concern to the pediatrician about her son’s weight. His older and younger brothers are both thinner than Timothy. Timothy’s mother is obese, but his father is a normal weight for height. Timothy is in the second grade. He rides the school bus to and from school. He participates in the School Lunch Program at his school, but his parents gave him extra money in case he wants to buy some additional à la carte food items from the cafeteria or items from the vending machines. After school, Timothy and his brothers stay in their home with a babysitter until one of their parents returns home from work. Timothy usually watches TV or plays video games after school. His parents leave snack foods-chips, cookies, and sodas — in the house for their sons to have after school. His mother usually prepares their evening meal, which consists of a meat, starch, vegetables, and a dessert item. After dinner, Timothy does his homework and then usually watches more TV with his parents. He usually has a dish of ice cream before going to bed.

What is your assessment of Timothy’s body size based on his weight-for-age, height-for-age, and BMI-forage percentiles?


Summary Introduction

To determine: The body size of Person T based on his weight-for-age, height-for-age, and BMI-for-age percentile.

Introduction: Centers for Disease Control and Prevention (CDC) growth charts are used to determine physical growth in children of 2–20 years of age. These charts are gender specific and are plotted in percentiles. These charts help in assessing and identifying health-related problems in children.


Person T, aged 7-years, was examined in an annual visit to the pediatrician and was found to weigh 68 lb (31 kg), which was at the 95th percentile for his age. He had a height of 50 in. (127 cm), which was between 75th and 90th percentiles for his age. With the BMI (19.25) at the 95th percentile for his age, his growth percentiles were increasing every year. Person T has a habit of snacking, and his lifestyle does not include much physical activities.

Refer to illustartion 15.1 “CDC growth charts: United States”, given in the text book. Accroding to this CDC growth chart, weight of Person T is in upper range; height is above the normal range, and BMI is also above the normal range.

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