Researchers found that women born between 1920 and 1945 who began smoking before age 20 lived an average of ten years less than women who had never smoked; men lived eight years less.
Teadlased jõudsid järeldusele, et ajavahemikus 1920 — 45 sündinud naised, kes hakkasid suitsetama enne 20 - aastaseks saamist, elasid keskmiselt 10 aastat vähem kui need, kes kunagi suitsetama ei hakanud.