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Zettelnaut
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Newsletter 191 — The Sequel Hormone
GLP-1 turned a gut hormone into a verb. The same industry is now making the same bet on a hormone built for sleep and craving instead of appetite.
Aug 16
•
Jeff Taekman, M.D.
1
Zettelnaut: Is Your Self-Driving Car Going to Give You Dementia?
Taxi and Ambulance Drivers Have the Lowest Alzheimer’s Death Rate of Any Job in America. Self-Driving Cars Could Erase the Reason Why.
Aug 12
•
Jeff Taekman, M.D.
2
2
Newsletter 190 — Never Lost
A brain required to continue building maps is associated with lower Alzheimer’s risk. This week’s research asks why.
Aug 9
•
Jeff Taekman, M.D.
1
2
Zettelnaut: When the Mirror Stops Being Human
AI Reflects Everything You Bring It. That's a Problem.
Aug 5
•
Jeff Taekman, M.D.
2
Newsletter 189 — What the Body Remembers
Your body has been keeping records autonomously. New research shows how it decides what to file.
Aug 2
•
Jeff Taekman, M.D.
1
3
July 2026
Newsletter 188 — Reserve Is a Verb
Exceptional memory into your nineties looked like a genetic lottery win. A study of 142 SuperAgers just blew up that paradigm.
Jul 26
•
Jeff Taekman, M.D.
1
3
Newsletter 187 — Slow Burn
The immune system has a crew that cleans up. New research shows what happens to the whole body when the workers stop working.
Jul 19
•
Jeff Taekman, M.D.
1
1
The Natural Sweetener Tier List
Not All “Natural” Sugars Are Equal. Some Feed Your Gut. Some Starve It.
Jul 17
•
Jeff Taekman, M.D.
1
1
Newsletter 186: Running Fast
On bodies aging faster than the calendar, a daughter who built an AI replica of her dying father, and the supplement that isn’t nature’s Ozempic.
Jul 12
•
Jeff Taekman, M.D.
3
3
June 2026
Newsletter 185: Body of Evidence
On a hidden circulatory system, the supplement premise that no longer rings true, and the $1000 age test that doesn’t really test your age.
Jun 7
•
Jeff Taekman, M.D.
2
Zettelnaut: The Space Between
My Barrier Age Essay Described the Walls. The Interstitium Is the Hallway on the Other Side.
Jun 3
•
Jeff Taekman, M.D.
1
1
2
May 2026
Newsletter 184: The Reversal
On reversing brain aging, invisible sleep debt, and the borrowed energy trap.
May 31
•
Jeff Taekman, M.D.
1
2
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