Dr. Weston A. Price's book, "Nutrition and Physical Degeneration", might be of interest. His photographs of, and reports on, facial and dental structure/health for those who keep their ancestral diets, and those who adopted a modern diet make quite a strong impression. The differences in children born after the parents had adopted a modern diet are striking.
Here is a link to read the book online at gutenberg:
Dr. Blake Donaldson found that allergies are manifestation of shock tissue. He asked his patients about their parents and grandparents, what ailments they had, and what they ate. His book, "Strong Medicine" is fascinating. I have yet to find his book online, but got one at a reasonable price through addall.com
Here, a small bit of information about Dr. Donaldson's diet and work:
Barry Groves has some excellent information on "You are what your grandparents ate", epigenetics, etc.
"...it suggests that a pregnant mother's diet can affect her health in such a way that, not only her children but her grandchildren and possibly generations even further down the line could also inherit the same health problems."
There are probably other good references on how the diet and lifestyle of the parents and grandparents affect children and grandchildren. These are the references I knew of.
Hope this helps a bit.