Effect of omega-3 dietary supplements with different oxidation levels in the lipidic profile of women: a randomized controlled trial

Abstract

The oxidation level of omega-3 fatty acid supplements commercialized in capsules may be a risk to consumers’ health. For this purpose, we have designed a single-blind, parallel-group, randomized controlled trial in which 52 women participated. Volunteers were randomly distributed into three groups consuming: (1) less oxidized oil pills, (2) highly oxidized oil pills and (3) no capsules. All groups consumed a fish-rich diet. Circulating glucose, total cholesterol, triglycerides and glutamic pyruvic transaminase were determined at the beginning and end (30 days) of the study. As a result, the ingestion of less oxidized ω-3 supplements reduced circulating triglyceride and cholesterol levels, as opposed to the highly oxidized omega-3 capsules, which had a negative effect on cholesterol levels. In conclusion, the level of oxidation of the supplements is a key factor in controlling circulating lipid profile. Therefore, manufacturers must pay attention to the quality of the prime product prior to encapsulation.

• Blood cholesterol
• blood lipid profile
• commercial pills
• fish oil
• lipid peroxidation
• triglycerides

Acknowledgements

Authors want to thank M^a Asunción Iborra Campos for their help in sample collection in her Pharmacy.

Consort Checklist: https://sites.google.com/a/goumh.umh.es/clinicaltrials/anuncios

Trial Protocol: https://sites.google.com/a/goumh.umh.es/clinicaltrials/anuncios

Trial registration: ClinicalTrials.gov Identifier: NCT01799720