The God gene hypothesis proposes that human beings inherit a set of genes that predisposes them towards spiritual or mystic experiences. The idea has been postulated by geneticist Dean Hamer, the director of the Gene Structure and Regulation Unit at the U.S. National Cancer Institute, who has written a book on the subject titled, The God Gene: How Faith is Hardwired into our Genes.
The God gene hypothesis is based on a combination of behavioral genetic, neurobiological and psychological studies. The major arguments of the theory are: (1) spirituality can be quantified by psychometric measurements; (2) the underlying tendency to spirituality is partially heritable; (3) part of this heritability can be attributed to the gene VMAT2;[1] (4) this gene acts by altering monoamine levels; and (5) spirituality arises in a population because spiritual individuals are favored by natural selection.