[Ajedi32]

That sounds like a really easy thing to study. (Does living near a highway significantly increase risk of cancer?) A single anecdote like that isn't very convincing.

[mushbino]

Here's a study done from 1990 to 2010. It shows a statistically significant increase in cancer.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4772211/