Human Genes are Turned On and Off by Diet
 

Scientists once believed that genetic information was fixed at the time of fertilization, and therefore was beyond any outside influences. This has been found to be untrue. Good genes are “turned on” by a healthy environment, just as “bad genes” are silenced by a healthy environment. In practical terms “a healthy environment” means a diet based on a plentiful supply of starches, vegetables, and fruits (avoiding animal-derived foods and oils). The biochemistry involved is complex, but may be of interest to you.