Epigenetic research, meaning “control above genetics,” has established that a variety of environmental influences (e.g., nutrition, stress, emotions) can modify genes without changing their basic blueprint and this can be passed on to future generations. (Lipton, Bruce, PhD. The Biology of Belief. p 67-68. CA: Mountain of Love / Elite Books, 2005.)
Refer to Cellular Memory (Epigenetics) for additional information.