The study of epigenetics blows a hole through the idea that our genetics are written in stone.
Science proves that environmental factors and lifestyle choices have the effect of switching certain genes on or off.
Identical twins are ideal for studies in epigenetics because their DNA starts out identical, yet each individual's choices (across the board) and the various environmental impacts on the conditions of their individual lives causes each individual identical twin to differ in activated genetics and in appearance to their twin brother or sister, over the course of their lives. It turns out that it really matters what you eat, drink and smoke -- and how much exercise you get...
The study of epigenetics has many implications, in the field of health and healing.