Gambling habits doesn't really pass from the gene of parents to children, most children are easily influenced by the hobbies of their parents. Normally most male just have interest in gambling because of the money it brings .
The medical professional had already confirmed this with their study. So how can we refute their findings? Ever heard the phrase, "runs in their blood"? Well, we heard this when one child did the same thing that the father did. So basically if the father is a gambler there is a tendency for his child to be a gambler too even though this kid never saw his father in an actual gambling session.
now come to think of it since it is difficult to escape our genetic makeup,
Mind over body, if there is a will there is a way.