Journal
BRITISH JOURNAL OF NUTRITION
Volume 102, Issue 5, Pages 722-732Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007114509297170
Keywords
Plant sterols; Fish oil; n-3 Fatty acids; Plasma lipids; LDL-cholesterol; TAG; Interactions
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Funding
- Hindustan Unilever, Bangalore, India
- Unilever Food and Health Research Institute, Vlaardingen, the Netherlands
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The present study was designed to evaluate the independent and interactive effects of a once-a-day yoghurt drink providing 2g plant sterols/d and capsules providing 2g fish oil n-3 long-chain (LC) PUFA/d on plasma lipids, apolipoproteins and LDL particle size. Following a 2-week run-in period, 200 mildly hypercholesterolaemic Indian adults aged 35-55 years were randomised into one of four groups of a 2 X 2 factorial, double-blind controlled trial. The 4-week treatments consisted of (1) control yoghurt drink and control capsules, (2) control yoghurt drink and fish oil capsules, (3) plant sterol-enriched yoghurt drink and control capsules, or (4) plant sterol-enriched yoghurt drink and fish oil capsules. Blood was drawn before and after the 4-week intervention. Changes in health status, lifestyle and dietary habits, and daily compliance were recorded. The main effects of plant sterols were a 4.5% reduction in LDL-cholesterol and a 15% reduction in TAG without a significant change in HDL-cholesterol. Overall, fish oil n-3 LC-PUFA did not significantly affect cholesterol concentrations but reduced TAG by 15% and increased HDL-cholesterol by 5.4%. The combination significantly lowered TAG by 15% v. control. No significant interaction between plant sterols and n-3 LC-PUFA was observed on plasma cholesterol concentrations. In conclusion, once-a-day intake of 2g plant sterols/d in a yoghurt drink, 2 g fish oil n-3 LC-PUFA/d in capsules, and their combination had beneficial effects on the lipid profile of mildly hypercholesterolaemic Indian adults. The potent hypotriacylglycerolaemic effect of plant sterols observed in the present study and this population warrants additional investigation.
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