I am frequently asked by journalists to recall the most surprising finding of our twin studies. The study of religion and belief in God is the one that always comes to mind, and the results are not easily accepted by many people. Most people can accept diseases or height and even weight being genetically heritable to some extent, but when it comes to our personal beliefs we tend to be more skeptical.
Nevertheless science has shown us clearly that one level of belief in God and overall spirituality is shaped not only by a mix of family environment and upbringing–which is not surprising–but also by our genes.
Read the full, original story here: What Twins Reveal About The Science Of Faith