I do not believe for one second that smoking is the leading cause of lung cancer nor that second hand smoke causes cancer.
Becaue of that I have to toss out that article you put up for consideration.
We have had 3 lung cancers in my small community of 500 people in the last 3 years. None of them were smokers. Out of my many lung caner patients in hospice only a couple were smokers.
They are lying to us. Radiaiton from nuclear testing cause lung cancer and it has swept across our nation like a black plague.
Please be advised
I advocate all health blogs linked to NMT.
Read them and explore MMS and CS.
It may be the best chance that you have to heal yourself
of long term and chronic illness.