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Agreed. Also not accounted for is the UK's huge immigration surge (more than doubling the foreign-born UK populace of the mid-90s). [1]

Different ancestries carry with them different genetic predispositions. It might be that the GBM rise is due to phenotypes not phones.

[1] http://www.migrationobservatory.ox.ac.uk/resources/briefings...

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My little brother died of a GBM about 3 years ago. The research I did at the time indicated that there are essentially no known predictors of GBMs; there appears to be a very slight correlation with being white, male, and ~30-50, all which matched for him.

I'm really sorry to hear about your brother. Thanks for sharing what you learned though!

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