Except causation, what can the connection be? Some genes causing both spatial reasoning and suppressing Alz?

The taxi-driving Alz patients may overwhelmingly die of something that leads to physicians not listing Alz as a cause of death. If taxi driving is loaded in such a way that Alz presents significant challenges (eg loss of income), that could be the case.

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jojobas 7 hours ago | parent [-]

But that's not a spatial reasoning connection. Also would include all other drivers.

	▲	vlovich123 6 hours ago \| parent [-]
		One easy way to confirm this is to look at the impact of GPS on this + whether London taxi drivers get less frequent Alzheimer’s than other cities/countries that don’t have the same requirements and complexities.