BBC NEWS | Health | Commitment phobes can blame genes

BBC NEWS | Health | Commitment phobes can blame genes: "A man's reluctance to marry may be down to a genetic 'flaw', say researchers.

Men who inherit a genetic variant that affects an important attachment hormone are prone to marital strife and are less likely to wed, work suggests.

Animal studies have shown the same hormone - vasopressin - affects voles' abilities to remain monogamous."