Epigenetics explained

Epigenetics is the study of the environment causing genes to be switched on or off and this effect being inherited in subsequent generations. Existing research has investigated stressful events, the response to that stress and its heritability. This includes the stress that results from insufficient food, different types of foods, too much food and nutritionally poor foods. The evidence available comes from the invention of a multitude of diseases that modern humans have developed since the introduction of agriculture.