"This theory – which is well supported by the evidence, as we’ll see – makes perfect sense when you understand the principles of epigenetics. Up until very recently, scientists believed that the affects of nurture (environment) on a species’ nature (genes) took generations to develop. Darwin’s Origin of Species taught us that evolutionary changes take place over millions of years of natural selection, not in a single lifetime. But recent work by pioneers like Dr. Lars Olov Bygren of the prestigious Karolinska Institute in Stockwholm has shown that powerful environmental triggers can bypass evolution and pass traits on in a single generation.
Epigenetics is the study of gene activity that doesn’t involve changes to the genetic code, but still gets passed down to at least one successive generation. These inherited patterns of gene expression (known as the “epigenome”) hover above the genome and are what determine whether your genes get switched on or off, and at what intensity. This epigenetic blueprint determines what effect environmental factors like diet, stress and toxins will have on genes passed from one generation to the next."