this post was submitted on 28 Aug 2024
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I highly recommend learning about chicken husbandry before you make this claim. There are decades of research across numerous countries talking about chicken feed and egg quality. Some farmers know by egg flavor alone if their chickens need supplements and which ones. Chickens can get really weird diseases if they aren't taken care of properly and this absolutely affects their eggs. I think what you're noticing is that the eggs you buy as a consumer are about the same for you personally, but that doesn't mean you can then turn around and claim that "eggs are remarkably similar even when raised on entirely different diets or conditions" and be actually correct.
I don’t understand the point of your comment because I’m not making a claim about animal husbandry necessarily. I think there are plenty of reasons why someone would want non-factory farmed eggs. All I was highlighting was that the difference in actual nutrition is fairly minimal in the studies I looked at and that was surprising to me. Like for how much people talk up farm raised eggs and how different the taste is and everything, I’ve always assumed that raising your own chickens results in drastically different nutritional qualities and I couldn’t find anything backing that up.
It's still an egg.
And are the nutritional studies you've read paying attention to vitamins and micronutrients? Or just calories and fats and protein contents?
I think at the time I was particularly focused on proteins and cholesterol for dieting reasons so I was less concerned with micronutrient content. That being said, the lack of differences between those things in eggs led me to dig a little deeper.
Specifically I wanted to know about eggs eaten in Japan since they take eggs pretty seriously over there and I had watched a mini documentary on it. And if I recall right, what I found was that yes there may be some minor differences in vitamin content or flavor, but they are just minor differences. I guess what surprised me was that I did expect large changes in the health of a caged egg and a carefully managed Japanese egg, but that didn’t turn up in my research. I’m not an expert though, but am scientifically literate.
So to bring it full circle, I know a dietician and I consulted them about it and they did confirm that yes, vitamin content may change though he said the levels of those vitamins and difference between the eggs would be a wash. He said there isn’t any nutritional reason that he knows of to recommend one egg over another.
This is backed up by what the conclusion I came to.The thing I feel most certain about is: In the grocery store, all eggs are the same. And that’s largely true. Now the difference between grocery store and local farm directly is more substantial, but only in cases with high quality food.
I do want to say I’m obviously not an expert, my dietician friend does not specialize in this so that’s the disclaimer, and both he and myself don’t have time to dive deep and if someone wants to present counter research on this, we’d love to be wrong about it.
Do you have sources for your claim that factory farmed eggs are nutritionally the same as cage free eggs?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8103914/
https://www.cambridge.org/core/journals/renewable-agriculture-and-food-systems/article/abs/vitamins-a-e-and-fatty-acid-composition-of-the-eggs-of-caged-hens-and-pastured-hens/552BA04E5A9E3CD7E49E405B339ECA32
No, it’s been awhile since I read up on it. But looking at your sources I come to a similar conclusion. There are differences but they’re minor differences.
Agree to disagree they are minor, especially at scale (eating more of them as you suggest).
That may be true. I roped a dietician friend of mine in on this and he confirmed my suspicion. The nutrient differences you’re noting, he claimed, are not going to be significant enough sources to matter. But those minor differences exist if people care about them.