I’m not sure if a thread exists like this already but I thought it would be interesting to share links to papers or research we might find useful.
Here’s one about the gene and microbial differences in different populations of humans in different geographic regions and cultures. A lot of the differences seem to be closely correlated to diet.
Not a paper but saw this article about endosymbiosis. There’s probably a Nature article as well, gonna look for it
Might be this : Autoactive CNGC15 enhances root endosymbiosis in legume and wheat | Nature
A paper looking at how anthocyanins can reduce micro and nanoplastic reproductive toxicity. Includes an interesting chart of different anthocyanins and which types of foods they’re found in.
Thought you might like to keep this in mind when focussing on colours in your breeding projects 
A group in China was able to induce epigenetic changes increasing the cold tolerance of rice in 3 generations of applying cold stress (aka, putting the plants in the freezer at key times), and the changes were durable for at least 5 generations without cold stress.
The most interesting part of this is that they were able to do whole genome analysis to confirm that they were inducing epigenetic changes (as opposed to selecting for better-suited genetics), and that they were able to identify the affected gene and discover the same effect in northern rice strains.
For us, it reinforces the benefits of saving seed for local reuse. It’s also a reminder that we aren’t entirely dependent on plain genetics - epigenetics can also work for us in crazy adaptation projects.
https://www.cell.com/cell/fulltext/S0092-8674(25)00506-9