But its not wrong to say that a irresponsible lifestyle could adversely affect the health and life of the offspring up to 5 generations.
It's disingenuous, at best. Any lifestyle choice could adversely affect the health and life of the offspring - whether any particular group does or doesn't consider it to be 'irresponsible' isn't the deciding factor. Eating a diet high in red meat has been linked to epigenetic effects, but so has eating a diet high in plant-based protein - there isn't any practical way to avoid epigenetic effects. Our research (perhaps understandably) focusses on what we consider to be deleterious effects, but it's equally plausible that some - or all - of these lifestyle choices will have beneficial effects as well.
And, at the same time, the overwhelming majority of epigenetic effects that we've identified are tied to environmental factors, not lifestyle choices - atmospheric pollution, water quality, childhood nutrition, radon exposure, the list goes on.
So the implications of the 'your lifestyle can have an epigenetic effect on your great-great-grandchildren' are misleading, if not technically inaccurate. And then to tie it in to religious bullshit like 'sin' is just to compound the problem.
O.