If you feed hens a special algae supplement for about a month, their egg yolks get a big boost in a healthy fat called DHA — but after 30 days, adding more doesn’t help because the yolks can’t hold any more.

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Pro

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Against

Evidence from Studies

Supporting (1)

11

Community contributions welcome

11

Time course of nutritional and functional property changes in egg yolk from laying hens fed docosahexaenoic acid-rich microalgae

Randomized Controlled Trial

Animal

2020 Sep

The study shows that feeding hens 1% DHA-rich algae boosts egg yolk DHA to about 946 mg per 100 g, and levels stop increasing after 30 days, just like the claim says.

Contradicting (0)

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Time course of nutritional and functional property changes in egg yolk from laying hens fed docosahexaenoic acid-rich microalgae

Score: 11

DOI: 10.1016/j.psj.2020.06.007

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