Circadian biology from first principles. Fix your sleep, metabolism, and energy without drugs or confusion.
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 356 | Founded | 4 years ago | Last Issue | 3 days ago |
| Active | |||||
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zaidkdahhaj.substack.comLatest Issues
How One Day of Sunlight Builds Your Sex Life
There’s nothing, and I mean nothing, more potent for your sexual health than a circadian aligned framework that includes routine, progressively overloaded sunbathing.
People treat sunlight as a switch where you get some exposure, make som...
The Ten-Thousandfold Xeroderma Pigmentosum Lesson
A baby is carried into a clinic at nine months old. Across her cheeks, in the exact triangle of skin a sunhat leaves open, the surface is blistered and raw. Her forehead, shaded by the brim, is smooth. She has been outdoors for minutes, not...
The Circadian Clock Underneath Everything
Pick any drug, any diagnosis, any lab value. Now ask what time of day it was measured. Medicine almost never asks that question, and that omission is the single largest unexamined variable in modern clinical practice.
The body is not a sta...
Circadian Control of Collagen: The MMP Story Dermatology Won't Finish
UV hits your skin. MMP-1 climbs. Collagen breaks down faster than it rebuilds. Wrinkles follow. Dermatology hands you that four step chain, and wrongly labels this as settled science within its messaging. Every link in this chain is real, b...
Did Our Ancestors Sunbathe?
Ask how early humans handled the sun and you get certainty from every direction.
One camp says they avoided direct light and took it in short protective bursts. Another says they lived under it all day and were better for it. Both are narr...
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Your doctor is afraid of the sun. I’m not. Circadian biology is the medicine they never taught.
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