Even though there are changes that occurred over the past 60,000 years since we left Africa, the biggest chunk of evolution had happened over 2,5 mln years since we started eat meat and our brains could rapidly develop.
The changes, mutations and adaptations that happened since our move out of Africa are only cosmetic compared to it - like skin color, higher tolerance for milk among peoples with early cow and goats domestication. There might be a slightly benefit with eating whatever is local and available, just as everywhere else. I moved around, I don't live where I used to live, and I assuming my ancestors spent at least some dozens of generations in Europe b/c I am very pale. It's also good to know when a particular style of agriculture was introduced in your general area. I don't know exactly where my ancestors came from, but I know that in Easter Europe the grains were introduced very late, so although they might have eaten them on their way from Asia, they probably weren't a staple of their diets as much as in ancient Western Asia, central Asia etc., which might mean even less adaptation. I am actually celiac, but of course that can happen everywhere.
We all have the same biological base. There is no such thing as race from biological perspective, the differences in the ways we look is only as differences in clothing that had to be adapted to a particular climate. So I wouldn't bother much beyond the Vit.D absorption if your skin is of very dark shade. There are some genetic accommodations that had happened over the past few tens of thousands of years which helped people survive particular local challenge, like higher numbers of people with a kind of anemia (which helped survive malaria) or malfunction in iron handling which might have been beneficial in contact with some diseases. I think a lot of it is more of a realm of epigenetics than genetics. Which means that they can still be changed even "against" what your ethnic group has been doing for a while if you move somewhere else and don't need that particular genes expression/switched on.
I think the other principles - eating meat, fish, natural fats and local veggies with some fruits is the same like everywhere else.