teachers, fisicians and smoke

i´ve got a teacher formation, my sisters are teachers, the wide majorety of my friends are the same and the wide majorety smoke, the wide majorety of phisicians smoke and the wide majorety can tel you that heach case is a case, there ain´t a padron case, the wide majorety can tel you everything has risks, there´s nthing without them and there´s a portuguese saing :witout risk there´s no taking