I mean, you are making a jump from correlation to causation. There is a reason science does not use anecdotes and relies on statistics, p values, and, confidence intervals.
That being said, did you happen to know what ingredients were in play, since he was using the same product for ~>20 years it sounds like, maybe the carcinogen landscape was much more under researched that long ago? I mean leaded gas was still sold in the US 'til 96 -- even though theres just so much evidence of it being harmful to the nth degree.
That being said, did you happen to know what ingredients were in play, since he was using the same product for ~>20 years it sounds like, maybe the carcinogen landscape was much more under researched that long ago? I mean leaded gas was still sold in the US 'til 96 -- even though theres just so much evidence of it being harmful to the nth degree.