I am certain there are health risks but as with any illness or disease some of us are just more susceptible to it while others more immune. My grandpa died in 1984 at 83 years of age having given up smoking and alcohol at a young age. I should also mention he worked in the coal mines before employment at Fisher Body. He died of cancer......prostate cancer. One never knows.
I did lead on my 49 Dodge first car, because ther wasn't any thing else. Learned by doing it. too old to do it any more.