arma ce ut ical s , ▁sem icon duct ors , ▁or ▁precision ▁instruments ▁and ▁mach in ery ▁are ▁produced ; ▁decre ased ▁legal ▁li ability ; ▁potentially ▁reduced ▁energy ▁use ▁via ▁decre ased ▁vent ilation ▁needs ; ▁reduced ▁quantities ▁of ▁l itter ; ▁health ier ▁environments ; ▁and ▁giving ▁sm ok ers ▁in cent ive ▁to ▁quit . ▁ ▁The ▁World ▁Health ▁Organ ization ▁cons iders ▁sm oking ▁b ans ▁to ▁have ▁an ▁influence ▁to ▁reduce ▁demand ▁for ▁to b acco ▁by ▁creating ▁an ▁environment ▁where ▁sm oking ▁becomes ▁increasing ly ▁more ▁difficult ▁and ▁to ▁help ▁shift ▁social ▁norm s ▁away ▁from ▁the ▁accept ance ▁of ▁sm oking ▁in ▁every day ▁life . ▁Al ong ▁with ▁tax ▁measures , ▁c ess ation ▁measures , ▁and ▁education , ▁sm oking ▁b ans ▁are ▁viewed ▁by ▁public ▁health ▁exper ts ▁as ▁an ▁important ▁element ▁in ▁reducing ▁sm oking ▁rates ▁and ▁prom oting ▁positive ▁health ▁out comes . ▁When ▁effectively ▁implemented ▁they ▁are ▁seen ▁as ▁an ▁important ▁element ▁of ▁policy ▁to ▁support ▁behaviour ▁change ▁in ▁favour ▁of ▁a ▁health y ▁l ifest yle . ▁ ▁B anning ▁sm oking ▁in ▁public ▁places ▁has ▁helped ▁to ▁cut ▁prem ature ▁birth s ▁by ▁ 1 0 ▁percent , ▁according ▁to ▁new ▁research ▁from ▁the ▁United ▁States ▁and ▁Europe . ▁ ▁Ev idence ▁basis ▁ ▁Research ▁has ▁generated ▁evidence ▁that ▁second - hand ▁smoke ▁causes ▁the ▁same ▁problems ▁as ▁direct ▁sm oking , ▁including ▁lung ▁cancer , ▁card i ov asc ular ▁disease , ▁and ▁lung ▁a il