Yes, GENERATIONAL. If I eat properly and my woman (hypothetical) also eats properly and we have offspring, the offspring will surely have better development, especially if we feed the offspring properly as well.
Good nutritions positively affects genes.
Also, since all of human cells, including bone cells are completely replaced after 17 years, a proper diet should in fact change one for the better, over time.
I have been on this diet for almost 8 years now, btw. .
My dentist is amazed by how good my teeth look for my age.
I teeth mog for sure, but I still need braces soon. At least my teeth are super healthy.