The Claim
Among 36 fish oil supplements sampled in New Zealand, 8% met international standards for oxidative stability (peroxide value <5, anisidine value <20, total oxidation value <26 meq/l), 83% exceeded recommended peroxide levels, and 50% exceeded total oxidation thresholds, indicating widespread degradation of product quality.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
A sample of 36 fish oil supplements sold in New Zealand was tested for freshness, and most showed signs of oxidation, meaning they had degraded beyond accepted quality standards.
See the scientific wording
Among 36 fish oil supplements sampled in New Zealand, only 8% met international standards for oxidative stability (peroxide value <5, anisidine value <20, total oxidation value <26 meq/l), while 83% exceeded recommended peroxide levels and 50% exceeded total oxidation thresholds, indicating widespread degradation of product quality.
What the research says
1 studyStudy: Fish oil supplements in New Zealand are highly oxidised and do not meet label content of n-3 PUFA
Scientists tested fish oil pills sold in New Zealand and found that almost all were spoiled or degraded, with only 8 out of 100 meeting quality standards—exactly what the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.