Nightly News | October 26, 2012
>>> we have health news tonight that was just released before we went on the air, in the form of the largest study ever on the risk of women and smoking. some dramatic new benefits on quitting, our report from chief correspondent robert bazell .
>> reporter: 28-year-old amanda garcia just joined a program to try to quit her pack a day smoking. she always thought about quitting.
>> i don't think i was really ready, i kept saying i'm not doing it or trying it until i am really ready.
>> reporter: the study out tonight provides the latest and best evidence that quitting is worth the effort. the researchers in britain followed women for 12 years, now in their 60s and 70s. smoking a pack a day starting with their teens, reducing their life by years, numbers of perimeter deaths, as well.
>> if you're a smoker for your whole life, the chances you will die directly from your smoking are greater than the chances of anything else put together.
>> reporter: the study examined women who even smoked a few cigarettes a day, doubled their chances of dying. but the news of the study is not all bad, reinforcing the idea if you quit it reduces the risk, the sooner the better. the research finds if a woman quits before her teens, her chances dropped by 90%, if a woman stops by age 50, it decreases substantially. others's risks disappear almost completely, her reason now? her two kids.
>> my kids mean everything to me, and i want to be there for them.
>> reporter: and she knows she has a far greater chance to be there by kicking the habit. robert bazell .