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Updated: Apr 28, 2026
08:54
NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements
Published on: May 1, 2017
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Fish or n3-PUFA intake and body composition: a systematic review and meta-analysis
1Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland; Institute for Human Evolution, University of the Witwatersrand, Johannesburg, South Africa.
Summary
Fish oil and omega-3 polyunsaturated fatty acids (n3-PUFA) supplements may aid weight management. A meta-analysis found fish oil intake significantly reduced body weight, BMI, body fat, and waist circumference.
Area of Science:
- Nutrition Science
- Public Health
- Cardiovascular Health
Background:
- Obesity is a significant global health concern, contributing to chronic diseases.
- Omega-3 polyunsaturated fatty acids (n3-PUFA) from fish oil show potential in preventing metabolic and cardiovascular diseases.
- The impact of fish oil on body composition remains unclear.
Purpose of the Study:
- To systematically review randomized controlled trials.
- To conduct the first meta-analysis on fish/fish oil intake and body composition.
- To investigate the effects of fish oil on weight, BMI, body fat, and waist circumference.
Main Methods:
- Systematic review of randomized controlled trials.
- Meta-analysis of studies examining fish or fish oil intake.
- Analysis of body composition measures including weight, BMI, body fat, and waist circumference.
Main Results:
- Participants consuming fish or fish oil lost an average of 0.59 kg more body weight.
- A reduction of 0.24 kg/m² in body mass index was observed.
- Fish oil intake led to a 0.49% greater loss in body fat and a 0.81 cm reduction in waist circumference.
Conclusions:
- Fish or fish oil consumption is associated with modest reductions in body weight, BMI, body fat, and waist circumference.
- No significant differences were found in fat mass or lean body mass.
- Further research is required to confirm these findings and elucidate the underlying mechanisms of n3-PUFA action on weight reduction.
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