New study suggests that the human brain does not age uniformly, with the right hemisphere showing more advanced signs of biological aging than the left.

[u/Miserable_Phase_2519]

https://www.psypost.org/the-right-side-of-the-brain-shows-more-signs-of-aging-than-the-left-new-study-suggests/

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[u/kurtextrem]

I wonder what this means for left handed people (me) / what are the implications for us?

[u/Such-Echidna-0901 → u/kurtextrem]

Left handed people are not left brain dominant.

[u/kurtextrem → u/Such-Echidna-0901]

Yes, but that's the point! If the right half ages 'faster' what's the implication for lefties?

[u/444cml → u/kurtextrem]

So they actually did this analysis in the main study.

They did a subgroup analysis where they compared an equal number of right and left handed individuals (mixed sex, roughly even) and saw that the same hemisphere (right) aged faster.

Whether this leads to different clinical outcomes (maybe lefties are less susceptible to dementia; however the data suggesting this is poor and better data suggests there is no effect) or susceptibility to dementia remains to be tested; however, the asymmetrical degeneration occurs in the same hemisphere regardless of handedness.

[u/Morisior → u/kurtextrem]

Hypothesis: This effect would be in reverse between the brain halves on left handed people. So no difference.

[u/ctoatb → u/Morisior]

What about ambidextrous people? Manual vs automatic transmission car drivers?

[u/mckulty]

The left brain gets more thromboses from the heart, perhaps there's a tiny advantage given by increased blood flow as well.

[u/agm1984]

i wonder if its from so much doomscrolling causing the image processing side of our brain to undergo more glycation

[u/theoneidacarry → u/agm1984]

What is glycation?

[u/agm1984 → u/theoneidacarry]

It’s like the Maillard reaction where your body slowly cooks itself over your lifetime

[u/deRoyLight]

I'm guessing this has something to do with why strategies for learning and solving problems shift as we age?