11 comments

  • fn-mote 1 hour ago
    The rate of fatality for Alzheimer’s among ambulance and taxi drivers is 3x lower than the general population. This is not observed in other transportation-related careers.

    The connection is believed to be the spatial reasoning involved in routing. No causative link is suggested.

  • jimmar 1 hour ago
    One of the first signs that a somebody has Alzheimer's is that they'll get lost. E.g., they've been attending church on Thursdays nights at the same chapel for 15 years, but suddenly they forgot how to get home after a recent service. Part of the reason for the findings in the current study is that people quit those professions when they feel themselves starting to struggle.
    • aetherspawn 1 hour ago
      Is the profession cached in the data when they leave the job? And does the data attribute 2 entries for someone with 2 careers. That’s the question I think
      • smelendez 41 minutes ago
        They explain it in the article. Someone, often the funeral director filling out the death certificate, asks what the deceased did for most of their working life.

        I’m a little skeptical of the category “ambulance drivers; not emergency medical technicians” as reliably coded, because people will often say so-and-so “drove an ambulance” when they were actually an EMT or paramedic. But it’s also not clear to me that would invalidate the findings.

  • jjcc 11 minutes ago
    It seems a lot of people already know that. I remember their's a claim that Taxi drivers hipocampus is larger than average people. A memory method called "Memory palace" or "Method of Loci" exists for 2 thousand years exploiting human's navigation capability.

    https://en.wikipedia.org/wiki/Method_of_loci

  • joecool1029 39 minutes ago
    I was really expecting this to be higher not lower due to factors like particulate inhalation from exhaust/brake dust/tire particles. Also there's a lot of sedentary-type problems you get while taxi driving like bad diet habits that are not conducive to brain health.

    Dunno, did taxi driving for a few years. Mostly suburban for a small fleet, not gigging. I'm thinking newer drivers that rely on smartphones for navigation won't get the same benefit.

    I seem to recall that at least some populations of taxi driver they have exams like The Knowledge (https://london-taxi.co.uk/the-knowledge/) where changes in structures of the brain can be measured after learning it.

  • bhouston 1 hour ago
    I immediately go to these two thoughts:

    - Is significant life-long usage of real-time mental spatial navigation protective?

    - Are those who end up in these positions self-selected for better than average real-time mental spatial navigation and that above average performance correlates with protection against Alzheimer's.

    • rudhdb773b 32 minutes ago
      I think your 2nd point is less likely.

      Anecdotal, but I've spoken with many taxi and ride-share drivers, and my impression is that their decision to seek out and continue that line of work is almost always driven by outside economic considerations. I've never heard someone base their decision on their ability to perform the job.

  • csallen 1 hour ago
    So why not bus drivers? Supposedly because their routes are fixed?
  • academicfish 36 minutes ago
    I assume that was a generation that didn’t use Google Maps.
    • shawn_w 22 minutes ago
      At my most recent EMS job ("ambulance driver" is considered insulting), the younger people couldn't navigate anywhere without mapping it. Some of them brought up being amazed that I could get to every hospital in our area from pretty much anywhere without having to bring it up on my phone (random houses and nursing homes were a different story).
  • smallnix 1 hour ago
    Would love to see a study looking at people who spend significant time in video games that require spatial navigation.

    That could even be a form of therapy after diagnosis (which seems to become easier with biomarkers).

  • sowbug 1 hour ago
    Would be interesting to see whether spatial reasoning from gaming shows the same association.
  • readthenotes1 1 hour ago
    That's a pretty positive spin on this statistic that ambulance drivers and taxi drivers die much younger than many other professions
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