Looking at the topic of gambling addiction, I have more often heard that it affects precisely those people who have a genetic inheritance, I mean, when the inheritance passes into gambling parents to children and they also become very gambling.
Not genetic but simply inherited because this is what the child see in their environment. Genetic is something from within though. I wouldn't mind to be like my gambler parents but that is if they are successful but that is unlikely in regards to gambling. So as a parent, we must be responsible enough and don't play gambling within the reach of our children. This is more risky as when a kid got hooked in video games because it costs money. And this is why there is a minimum age requirement for this.
And also, the creation of gambling addiction in a person is always facilitated by the immeasurable blind perseverance that people who either persistently play sports usually have. Or they love watching sports on their own and making predictions. In general, those who have competitive traits in their character.
Sports has a positive impact in the body and can actually make one to stay away from risky and negative things like gambling. Being competitive or for one to predict if which player or team can win is one of the mechanics of sports, and does not generally lead for a person to be a gambler.