I have been lifting pretty intensely for about a year now and use several supplements at any given time. I'm also a smoker--about 10-15 cigarettes per day on average. Before anyone says it, yes, I know it's a terrible habit that I need to give up. My question, though, is regarding supplements that may interact with whatever bad chemicals are in the tobacco.
I quit using multis with beta carotene because of studies showing it could drastically increase the risk of lung cancer. I have also heard that using testosterone could also be a risk for smokers, although I can't find the studies or source of information I got this from. Are there certain supplements, such as prohormones for example, that should be avoided if you smoke?
**I couldn't post the links on beta carotene, but if you google "smoking and beta carotene", a lot of studies will show up.**