This is running way, way, WAY ahead of the science on the issue. I've read some of the papers that are based on the Dutch famine population in the local journal

This is running way, way, WAY ahead of the science on the issue. I've read some of the papers that are based on the Dutch famine population in the local journal club I attend with behavior genetics researchers. I've also read the paper about the mice smelling a stimulus scent associated with aversive treatment. The effect sizes are not strong enough to conclude there is a reproducible effect here. Nobody who is looking responsibly at the data is yet ready to conclude that there are a lot of strong influences on phenotype passed on to grandchildren (F2 generation) that are caused by environmental influences on the grandparents (the P generation).