A couple of useful open access papers:
(1) A comprehensive analysis of mammals was published earlier this year.
(2) This fairly recent review (predating the above study) gives a lot of background.
There are so many possible genetic and environmental factors that I think it’s impossible to answer the OP’s question with any degree of certainty for humans. As the review article above says, it’s a little surprising that nobody has studied this phenomenon much in model organisms in the lab, where we can do carefully controlled experiments.