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✦ New Frontier Of Your Mind ✦
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A girl of seven, deaf from birth.
One gene in her ear held a broken copy.
Surgeons sent in a working copy on a virus.
Four months later her hearing sat near normal…
Sound, sight and the sense of your own limbs. All three are back on the bench.
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// Quick Check
First reaction?
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// Body Hack
Book The Hearing Test
Frank Lin’s team gave 977 adults either hearing aids or health classes. All were 70 to 84, with hearing loss and nothing done about it.
Across the trial, three years of aids moved the main measure nowhere.
But 238 of them came in with more risk factors and weaker scores. In that group, thinking held up 48% better across the three years. A subgroup result carries less weight than the full trial.
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Book a test if speech in a noisy room is a strain. |
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Ask for your numbers, not a pass or a fail. |
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If you get aids, wear them daily rather than for guests. |
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Give the fit a month, and go back for a tune. |
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Put the next check in the diary a year out. |
↗ Source: Lin, The Lancet, 2023
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// The Pivot
The senses feed the mind
Gene therapy and chips need a surgeon and a trial slot. A hearing test needs a phone call.
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// SoundGene
Ten patients in China took one injection each. It went in through the round window, at the base of the cochlea.
Every one carried a broken OTOF gene. The ear could not pass sound along.
Hearing thresholds fell from 106 decibels to 52. Most of the gain arrived inside a month.
Ages ran from 1 to 24. Children of five to eight did best.
Nothing serious went wrong across six to twelve months… but this was a single arm, with no control group.
↗ Source: Qi, Nature Medicine, 2025
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// PixelSight
A chip two millimetres square now sits under 38 retinas. It holds 378 pixels, powered by infrared light beamed from a pair of glasses.
These are eyes with the central vision burnt out by macular disease.
Thirty two reached a year. Of those, 26 gained two chart lines or better. The average came to five.
Twenty seven could read letters, words and numbers at home, with heavy zoom.
Nineteen had serious eye events, mostly within two months. Almost all of those cleared up.
↗ Source: Holz, New England Journal of Medicine, 2025
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// Your Pick
Which sense would you guard first?
Pick one and hit send.
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// LimbSense
Hugh Herr’s group at MIT rewires muscle pairs during the amputation itself.
Each pair keeps pulling against the other. So the brain still knows where the limb sits.
Seven people had that surgery, against seven with the standard one.
Top walking speed reached 1.78 metres a second, against 1.26. That is 41% quicker, and level with people who kept both legs.
Stairs, slopes and stepping over things came easier too. The muscle feedback rose by only 18% of a natural leg.
↗ Source: Song, Nature Medicine, 2024
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Most advice on the senses stops at eating carrots.
I spend more than $20,000 a year on private research… the sort hedge funds pay for. Walled off from the public.
Then I read the paper behind the claim.
My own ears went in for a test this month, out of curiosity. The numbers came back fine, and that is one man’s report.
Chips and viruses want a surgeon. Your ears want a phone call.
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// Talk To Me
When were your ears last tested?
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Stay primal,
Dex
Primal Code
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