For which reason, in spite of the potential inconclusiveness of these results, I am mildly concerned about the parent subject. I used to be a smoker. After qui

For which reason, in spite of the potential inconclusiveness of these results, I am mildly concerned about the parent subject. I used to be a smoker. After quitting and having some tests done by my doctor he said that my lungs should be back to functioning/health as if I'd never smoked inside of 4-5 years (so long as I didn't relapse. That hasn't been a problem). We didn't discuss chances of lung cancer in spite of that. If it's true that the supportive effects of B12 supplementation even on ex-smokers exponentially increases chances, then it becomes even more concerning. I'll be watching for developments.