This is notably different than the human nutritional environment. (microbiomelabs.com)
In an intergenerational developmental programming model affecting F2 mouse metabolism, we demonstrate that the in utero nutritional environment of F1 embryos alters the germline DNA methylome of F1 adult males in a locus - specific manner. (science.sciencemag.org)
But the point is no one can argue that Japanese people in the 1960s lived in the same sort of nutritional environment as Americans in 2015. (health.com)