If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Relationship of the dietary phytochemical index to weight gain, oxidative stress and inflammation in overweight young adults

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

Abstract Background: 

Phytochemicals are bioactive nutrients that help reduce disease risk. A high intake of these compounds is important for optimal health and prevention of disease, but quantification of these nutrients in vivo is costly and time consuming. The present examined whether an alternative, simple ‘phytochemical index’ (PI) ratio calculation (PI = the ratio of the energy from high-nutrient phytochemical-rich foods to overall daily energy consumed [kJ phytochemical rich foods/total kJ consumed]) was related to several precursors of future disease: annual weight gain, adiposity, oxidative stress and inflammation. Methods: 

This was a cross-sectional, quantitative, descriptive study (n = 54, age range 18–30 years). Participants were stratified into normal weight and overweight groups. Three-day dietary records were analysed for food items, food groups, energy and the PI score at repeated time points. Blood plasma samples were analysed by colorimetric or an enzyme-linked immunoabsorbent assay for cholesterol subfractions, glycated haemoglobin, total antioxidant status, lipid hydroperoxides, cytokines (interleukins-1β and -6) and C-reactive protein). Results: 

PI values were higher in the overweight-obese group. Correlation values between the PI score and body mass index, waist circumference, waist-to-hip ratio and plasma oxidative stress were significant. The PI score did not correlate with any cytokine levels. The PI score was a significant contributor to yearly weight gain. Conclusions: 

The PI is inversely related to adiposity and oxidative stress in healthy young adults, and is responsive to body weight changes. This simple, easy to administer index might be useful as a dietary target for appropriate proportion consumption of nutrient-rich foods in weight reduction or management programmes.

Keywords: cytokine; inflammation; lipid peroxidation; obesity; phytochemical

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1365-277X.2009.00987.x

Affiliations: 1: Department of Orthopaedics and Rehabilitation, University of Florida, Gainesville, FL, USA 2: Center for the Study of Complementary and Alternative Therapies (CSCAT), University of Virginia Health System, Charlottesville, VA, USA

Publication date: February 1, 2010

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more