Journal
CLINICAL MICROBIOLOGY AND INFECTION
Volume 24, Issue 1, Pages 24-28Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cmi.2017.02.013
Keywords
Anorexia nervosa; Body mass index; Infection risk; Obesity; Underweight
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Funding
- Austrian Federal Ministry of Science, Research and Economy
- National Foundation for Research, Technology and Development
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Background: Nutritional status is a well-known risk factor for metabolic and endocrine disorders. Recent studies suggest that dietary intake also affects immune function and as a consequence infection risk. Aims: This reviews aims to give an overview on the effect of body weight on infection rate at different periods of life. Sources: Clinically relevant prospective, cross-sectional and case-control community-based studies are summarized. Content: In children and adolescents underweight is a significant risk factor for infection especially in developing countries, probably reflecting malnutrition and poor hygienic standards. Data from industrialized countries suggest that infection rate is also increased in obese children and adolescents. Similarly, several studies suggest a U-shaped increased infection rate in both underweight and obese adults. In the latter, infections of the skin and respiratory tract as well as surgical-site infections have consistently been reported to be more common than in normal-weight participants. Paradoxically, mortality of critically ill patients was reduced in obesity in some studies. (C) 2017 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.
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