Epigenetics is like the instructions for your body. It can tell your body when to make a certain hormone or how to behave in a certain situation. When it comes to depression, epigenetics can affect whether you get depressed or not. Your genes have instructions that tell your body how to respond to different situations and emotions. When these instructions become mixed up, you can end up feeling depressed. This mix up can be caused by things like a medical condition, environment or life experiences. By understanding epigenetics and how it affects depression, scientists can develop treatments to help people manage and even prevent depression.