Gluckman - developmental origins concept  

Well the concept is very simple. It simply says that things that happen early in life, from before you’re conceived, through pregnancy and in infancy, have consequences for the rest of your life. They affect your risk of getting obese, of getting heart disease, of diabetes, mood disorders, bone disease and so forth. 

It’s not just one mechanism; it refers to the fact that a lot of different biological mechanisms are 

affected early in life which have echoes right through life, and potentially into the next generation.