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The role of long chain omega-3 polyunsaturated fatty acids (fish oil) on weight loss

Does presupplementation and then supplementation with long chain omega-3 polyunsaturated fatty acids assist with weight loss during a low kilojoule diet with obese individuals

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12610000654055
Acronym
nil
Enrollment
50
Registered
2010-08-11
Start date
2010-01-15
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Weight gain has been associated with increased inflammation and n-3 long chain polyunsaturated fatty acids (fish oil) supplementation have been shown to possess anti-inflammatory properties. This study is investigating whether presupplementation with fish oil, then followed by supplementation with fish oil while following a weight loss program, may assist weight loss and reduce inflammatory biomarkers

Interventions

Participants will consume, by mouth, 6 x 1 g/day fish oil capsules composed of 270mg docosahexaenoic acid (DHA) and 70mg eicosapentaenoic acid (EPA)/capsule for four weeks while following a normal, healthy diet, ie. their normal diet without fast foods/take away foods. Participants will then consume a very low Kilojoule (kJ) diet (VLCD) of 3,000 kJ/day using meal replacements for four weeks while continuing to consume 6 x 1g/day fish oil capsules, also for four weeks. The meal replacements wil

Participants will consume, by mouth, 6 x 1 g/day fish oil capsules composed of 270mg docosahexaenoic acid (DHA) and 70mg eicosapentaenoic acid (EPA)/capsule for four weeks while following a normal, healthy diet, ie. their normal diet without fast foods/take away foods. Participants will then consume a very low Kilojoule (kJ) diet (VLCD) of 3,000 kJ/day using meal replacements for four weeks while continuing to consume 6 x 1g/day fish oil capsules, also for four weeks. The meal replacements will be supplied to participants as part of the study. Participants receive 1 x 20 minutes per week individual education sessions on dietary modification and behaviour change for the four weeks of weight loss.

Sponsors

The University of Newcastle
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used)

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

Body Mass Index (BMI) between 30 and 40 Can consume fish Can swallow capsules

Exclusion criteria

BMI > 40; Diabetic; Already consuming fish oil caplsules or more than 2 oily fish meals/week; Has an inflammatory condition

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026