Send to

Choose Destination
Food Funct. 2013 Apr 25;4(4):650-8. doi: 10.1039/c3fo60038f. Epub 2013 Feb 11.

Prior supplementation with long chain omega-3 polyunsaturated fatty acids promotes weight loss in obese adults: a double-blinded randomised controlled trial.

Author information

Nutraceuticals Research Group, School of Biomedical Sciences and Pharmacy, University of Newcastle, 305CMedical Sciences Building, University Drive, Callaghan, NSW 2308, Australia.


Obesity has been linked with low levels of ω-3 fatty acids. Generally, intervention studies have failed to establish benefits of supplementation with ω-3PUFA in reducing body weight or fat mass in humans. The aim of this study was to investigate whether supplementation with LCω-3PUFA alone, then consumed concomitantly with a very low energy diet (VLED), facilitated weight loss, improvements in blood lipids and positive changes to inflammatory mediators. This was a double blind randomised controlled trial with two parallel groups. For 4 weeks of prior supplementation, one group consumed 6 × 1 g capsules per day monounsaturated oil (placebo), the other group consumed 6 × 1 g capsules per day LCω-3PUFA (fish oil) each comprising 70 mg EPA and 270 mg DHA, while consuming their usual diet. Each group continued with their supplements for another 4 weeks while both groups followed a VLED regimen (n = 19 placebo, n = 20 fish oil). Fasting blood samples, anthropometric measurements and 3-day food diaries were collected at baseline, at 4 weeks and at 8 weeks. At 4 weeks levels of EPA and DHA increased two-fold in the fish oil group (P < 0.001), with no significant changes to anthropometric measurements for either group. At 8 weeks a significant 3-way interaction between time, group and gender was observed for percentage reduction in weight, F(1,35) = 5.55, P = 0.024, and BMI, F(1,35) = 5.3, P = 0.027 with a greater percentage decrease for females in FO compared to PB for weight (-7.21% vs.-5.82%) and BMI (-7.43% vs.-5.91%) respectively (P < 0.05 for both). It would appear that supplementation with LCω-3PUFA had a time dependent effect on weight loss in females.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Royal Society of Chemistry
Loading ...
Support Center