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.