Smoking before becoming a father can damage future offspring
From Business Wire:
A study by the Federation of American Societies for Experimental Biology (FASEB) explains that men who smoke can cause genetic damage to their future children, even before conception.
FASEB scientists report that men who smoke before conception can damage the genetic information of their offspring, making them more susceptible to diseases such as cancer. Adolescents and young adults should think ahead if they plan on conceiving at some point in their lives. Read more.