The video u'll saw is how cigars affect the lungs only. But gettin addicted to that (cigars), some drugs are contained which is prohibited according to law. As its contains less drug in cigars law is not much strict about it. Even the coca cola drink some drugs are contained , in Sri lanka less drugs in coca cola drinks, but in America contains alot.
Another important thing is that as the da above video shows how cigar cause lungs cancer. In America the experts hav found ways of transforming wheat, rice wheat, corn into fuel which explains that the food we consume too cause bad affections like cancer. therefore we need to hav a balance diet to stay healthy. Smoking is really really really not good and prohibited if u want to keep it as a balance diet!