how does smoking 'contribute' to non-alcoholic fatty- liver disease?

presentation link
http://prezi.com/8nmbuwsybeoj/how-does-smoking-contribute-to-non-alcoholic-fatty-liver-disease/?kw=view-8nmbuwsybeoj&rc=ref-40261273

Ｉreally like your prezi. At previous, I just know smoking is not good for health. I　ｔｒｉｅｄ　to help my father avoid smoking. He said he must smoke, otherwise, he will feel uncomfortable. At that time, I just thought, Ok, he can continue on smoking, because he would feel uncomfortable without smoking. I did not try to help him avoid smoking more. After saw your prezi, I　got a deep thinking about smoking. And I search more informationn about smoking. After that, I decide to let my father avoid smoking anyway. In addition, you can add some pictures which compares good health body and the body after smoking to show how harmful about the smoking.