Four days back, when I was telling my children about the effects of using betel nut (Chalia), my 11 year old son responded quickly, "No, betel nut is not dangerous; grandmother is using it for a long time but nothing happened to her".
I tried hard to make to him understand that betel nut destroys our teeth, stomach and concentration considering his mental level. I had difficulty to do so because of comparing his grandmother's health with those who are not using betel nut. Actually, my mother-in-law is very active and social type of person, can deal all sorts of people besides doing household chores appropriately. She also watches television with full interest that made my son wonder that her performance at all level is good enough up till now then how betel nut could be harmful for rest of the family members.
Children are too innocent who merely perceive the things from surface. They are not able to pay a deep look inside the apparent behavior and learn by observing others. In a family, where elder use drugs and any substance such as betel nut, chewing tobacco, they present them as a role model for their youngest family members (children). They put their children at great risk to use these substances/drugs in future because children learn from us. At very early age, they have no other way but to experiment things by observing others. Therefore, it is our responsibility not to teach wrong behaviors to our innocent minds to copy them.