> High levels of education linked to heightened brain tumor risk

> Gliomas, in particular, more common among university-educated, large observational study shows

> Men with university level education, lasting at least three years, were 19% more likely to develop a glioma

I believe, for a rare cancer, a 19% increased risk is not a very big deal. It's still low risk. (And of course, only the correlation is known.)