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The association between diet quality and subclinical inflammation among children aged 6–18 years in the Eastern Cape, South Africa

Author:
Oldewage-Theron, Wilna, Kruger, Rozanne
Source:
Public health nutrition 2017 v.20 no.1 pp. 102-111
ISSN:
1475-2727
Subject:
C-reactive protein, ascorbic acid, body composition, boys, children, cross-sectional studies, folic acid, food groups, girls, inflammation, iron, linoleic acid, linolenic acid, magnesium, nutrients, nutritional adequacy, obesity, questionnaires, risk, schools, socioeconomic status, zinc, South Africa
Abstract:
The study aimed to investigate, for the first time, the association between diet quality (food variety and dietary diversity), intakes of anti-inflammatory nutrients and food groups, and subclinical inflammation as assessed by categories of high-sensitivity C-reactive protein (hs-CRP). Cross-sectional study. Resource-poor, rural children in the Eastern Cape, South Africa. A sample size formula determined a representative sample of 235. Five schools were purposively selected and cluster sampling used to select 240 participants. Measurements included 24 h recall and dietary diversity questionnaires, anthropometric and biochemical measurements. The sample consisted of 50·4 % (n 118) girls and 49·6 % (n 116) boys. No obesity was found, but overweight was prevalent in 4·2 % of the children. The hs-CRP concentration (median (25th, 75th percentile)) of the low, medium and high risk inflammatory categories was 0·6 (0·4, 0·7), 1·6 (1·2, 2·2) and 4·2 (3·4, 6·4) mg/l, respectively. Body composition parameters did not differ between hs-CRP groups. Most of the anti-inflammatory nutrient intakes (dietary Fe, Zn, Mg, vitamin C, folate, linolenic acid, linoleic acid, MUFA and PUFA) differed significantly between the hs-CRP groups, with intakes increasing from low to high hs-CRP groups, with similar results for linolenic acid (P=0·022) intake. No significant relationships between hs-CRP and any of the food groups could be established, but significant relationships were established between hs-CRP levels and the high density of living arrangements and unhygienic ablution facilities. Although no link could be established between overnutrition and hs-CRP levels, an association was found between hs-CRP and dietary quality, as well as socio-economic status.
Agid:
6514730