Epigenetics has been used for rather comical effect in some cases, with a whole lot of things being correlated to the diets of parents and even grandparents.
There is good news; your epigenetic heritage is not a prison. Rats whose mothers were fed a high-fat diet during pregnancy and nursing were able to stave off some of the detrimental health effects of obesity by exercising during their adolescence. Get the kids out and play and it doesn’t matter how fat their moms are.
The rat offspring weighed the same as their sedentary counterparts, the exercising rats had fewer fat deposits and their brains were better able to respond to a hormone known to suppress the appetite – leptin – long after they stopped running on their exercise wheels.
Read the full, original story here: If Kids Exercise, They Are Not Doomed By Maternal Epigenetics To Be Obese