There is a huge problem with what school taught us about genetics! We were taught that you had certain genes and there is nothing you can do about it! So, if you had a gene for cancer or fat or heart disease you're doomed! Which is the worst thing to tell people! Why try when you are already doomed?  The truth, however, is that some diseases are genetic, but the vast majority you have control over! And that is where epigenetic comes in!