Dietary Intervention Causes Redistribution of Zinc in Obese Adolescents

Obese people tend to have low zinc circulation levels; this is not always related to zinc intake but can reflect the distribution of zinc in relation to the proportion of body fat and factors related to the inflammatory processes that cause obesity. The purpose of this study was to assess zinc distr...

Full description

Saved in:
Bibliographic Details
Published in:Biological trace element research 2013-08, Vol.154 (2), p.168-177
Main Authors: Freire, Simone Cardoso, Fisberg, Mauro, Cozzolino, Silvia Maria Franciscato
Format: Article
Language:English
Subjects:
Adolescent
Adolescents
Biochemical analysis
Biochemistry
Biomedical and Life Sciences
Biotechnology
body fat
creatinine
Creatinine - urine
Dietary Supplements
dual-energy X-ray absorptiometry
Eating behavior
Erythrocytes
Erythrocytes - metabolism
Female
food consumption
Food groups
fruits
girls
Health behavior
healthy diet
Humans
Insulin
Insulin - blood
Life Sciences
Male
meat
Nutrition
nutritional intervention
Nutritional status
Obesity
Obesity - blood
Obesity - diet therapy
Oncology
Oxidative stress
Puberty
questionnaires
Saliva - metabolism
Sex Characteristics
superoxide dismutase
Superoxide Dismutase - blood
urine
Zinc
Zinc - administration & dosage
Zinc - blood
Zinc - urine
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Obese people tend to have low zinc circulation levels; this is not always related to zinc intake but can reflect the distribution of zinc in relation to the proportion of body fat and factors related to the inflammatory processes that cause obesity. The purpose of this study was to assess zinc distribution in 15 obese adolescent girls before and after a nutritional orientation program. Participants ranged from 14 to 18 years old (postpubescent) and had a body fat percent (BF%) of >35 %. Zinc nutritional status and other zinc-dependent parameters, such as superoxide dismutase (SOD) and insulin levels, were assessed by biochemical analysis of plasma and erythrocytes, salivary sediment, and urine. Samples were collected before and after 4 months of dietary intervention. Dual energy X-ray absorptiometry (DXA) was used to verify BF% both at the beginning and at the end of the study. Food consumption was assessed in ten individual food questionnaires throughout the study; food groups were separated on the questionnaires in the same way as suggested by some authors to develop the Healthy Eating Index (HEI) but with the addition of zinc. After 4 months of nutritional orientation, 78 % of the participants showed a decrease in BF%. Intraerythrocytic zinc increased over the study period, while salivary sediment zinc, SOD, insulin, and Zn urinary24 h/creatinine all decreased (p 
ISSN:0163-4984
1559-0720
DOI:10.1007/s12011-013-9718-4