The Claim
Missing EPA and DHA content in fish oil supplements is statistically significantly associated with elevated anisidine values and total oxidation values, indicating that oxidative degradation is linked to the loss of omega-3 fatty acids in these supplements.
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.
Fish oil supplements with lower levels of EPA and DHA have higher levels of oxidation markers, which suggests that oxidation processes reduce the amount of omega-3 fatty acids in these products.
See the scientific wording
There is a statistically significant association between missing EPA and DHA content and elevated anisidine values (AV) and total oxidation (Totox), suggesting that oxidative degradation may contribute to the loss of omega-3 fatty acids in fish oil supplements.
When fish oil is exposed to air and light, the omega-3 fats break down chemically, creating harmful byproducts that raise anisidine and total oxidation numbers, which means less EPA and DHA remain in the oil.
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
Many fish oil supplements have less omega-3 than they say, and at the same time, they’re more broken down by air and light — this suggests the oxidation is eating away at the good fats.
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.