Abstract
Objectives: Phytochemicals are known as bioactive nonnutrient plant chemicals found in high amounts in fruits, vegetables, grains, nuts and legumes [1]. The present study aimed to determine effect of the phytochemical index (PI) score on the incidence of hypertriglyceridemic waist (HTW) phenotype and lipid accumulation product (LAP) index in adults. Methodology: Biochemical and anthropometric measurements were assessed at baseline and after 3 years. A food frequency questionnaire (FFQ) was used to assess food intake at baseline. Dietary PI was calculated based on the modified method developed by McCarty. Results: The mean PI was 53.3±15.2. Mean LAP was 34.6±22.6 at baseline, and 43.2±29.9 after 3 years. Mean WC at baseline and 3-year changes were 87.2±13.2 and 4.9±7.1 cm, respectively. After adjustment for potential confounders, dietary PI were inversely associated with changes in waist circumference (β= -0.08, P<0.01), serum triglycerides (β= -0.07, P<0.01) and LAP (β= -0.09, P<0.01) after 3 years. Risk for occurrence of HTW phenotype in participants with highest compared to lowest dietary PI was significantly reduced (OR=0.5, 95% CI= 0.26-0.96). Conclusion: Results showed that the higher phytochemical intake is associated with lower occurrence of HTW phenotype.
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