>>82100793
You mean in the leaf? What are you talking about? Of course, tobbaco has genetics.

If you mean that some people genetically deal better with tobacco than others, you can still sidestep the whole issue by putting in effort to not get addicted to it in the first place. You could have otherwise great genes and then throw it away by picking up chewing tobacco and not being able to stop.

You could know it's bad for you and not take any steps to take yourself off of it because they're hard.