Just today, interesting.
But my aim was only to make the focus on the ability to procreate as a defense of what should be considered normal.
“Biology of Belief” been out for quite a while and is easy to read even for a layman.
Incidentally, the scientist who did this research is active in a Christian church (His wife was formerly council pres.)
He took genetically identical agouti mice that were predisposed to obesity, diabetes, and cancer and in a controlled environment, changed the diet in the experimental group which significantly altered gene expression. There is a pic of two of the mice at the link.