Prevention & lipids

Health Claims and Doses of Fish Oil Supplements in the US

JAMA CardiolPublished Cross-sectional study

Authors' conclusion

Results of this cross-sectional study suggest that the majority of fish oil supplement labels make health claims, usually in the form of structure/function claims, that imply a health benefit across a variety of organ systems despite a lack of trial data showing efficacy.

Study context

Population
Labels of on-market fish oil (and nonfish ω-3 fatty acid) supplements in the US, NIH Dietary Supplement Label Database
Participants
2,819 unique fish oil supplements
Outcome
Frequency and types of health claims on fish oil labels (FDA-reviewed qualified health claim vs structure/function claim) and organ system referenced; total daily EPA+DHA dose for supplements from 16 leading manufacturers and retailers
Methodological detailsConducted and data analysed February to June 2022
  • Conducted and data analysed February to June 2022

Main finding

As reported in the abstract

Health claims on labels

Supplements with ≥1 health claim

2082

73.9%

Of these, FDA-approved qualified health claim

399

19.2%

Of these, only structure/function claims

1683

80.8%

Cardiovascular health claims (most common)

1747

62.0%

Observational data: associations, not effects.

Further findings

Daily dose, 255 supplements from 16 leading brands/manufacturers

Eicosapentaenoic acid (EPA), median [IQR]
340 [135-647] mg/d
Docosahexaenoic acid (DHA), median [IQR]
270 [140-500] mg/d
Total EPA+DHA, median [IQR]
600 [300-1100] mg/d
Daily dose ≥2 g EPA+DHA
24 of 255 (9.4%)

Original publication

Health Claims and Doses of Fish Oil Supplements in the US. JAMA Cardiol. Published 1 October 2023. doi:10.1001/jamacardio.2023.2424

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