
The Cell BriefBasics
Five Peptides Your Body Makes Every Day
Insulin, oxytocin, GLP-1, ghrelin and beta-endorphin are all peptides, built from the same 20 amino acids. Here is where each one is made, what each one tells your cells, and why the same alphabet can carry such different messages.
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The Cell BriefBasics
Five Peptides Your Body Makes Every DayInsulin, oxytocin, GLP-1, ghrelin and beta-endorphin are all peptides, built from the same 20 amino acids. Here is where each one is made, what each one tells your cells, and why the same alphabet can carry such different messages.
The Cell BriefLongevity
Epitalon: Four Amino Acids, Telomerase and the Body ClockA four-amino-acid peptide modeled on a pineal gland extract and famous for switching on telomerase in human cells in a dish. Here is what the cell, animal and human research actually shows, and who did it.
The Cell BriefSkin & Hair
AHK-Cu: The Copper Peptide One Letter Away From GHK-CuAlanine, histidine, lysine and one copper ion: AHK-Cu is GHK-Cu's hair-side cousin. Here is what the one human hair-follicle study found, and what is still unknown.
The Cell BriefBasics
What Is a Peptide? Letters, Words and BooksAmino acids are letters, peptides are short words, proteins are books. Here is what a peptide actually is, why short chains make such good messengers, and how insulin, oxytocin, GLP-1 and semaglutide fit in.01
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Every brief covers a single peptide or cell signal.
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1,200 to 1,800 words. Plain language. No hype.



