Peptides
Mechanisms, research, benefits, limitations, and emerging applications.
98 articles in Peptides · page 7 of 9
The Difference Between Peptides and Proteins, Explained
Where one ends and the other begins: a soft, roughly 50-residue convention, not a hard chemical line.
Read →Research Peptides and Purity: What 'For Research Use Only' Means
The RUO label is an FDA-defined signal about what testing and oversight you are not getting.
Read →Peptide Half-Life, Explained: Why Dosing Frequency Varies
Native GLP-1 lasts ~2 minutes; semaglutide lasts ~1 week. Half-life is the hidden variable behind every dosing schedule.
Read →Animal Data vs Human Data: The Peptide Translation Gap
Over 92% of drugs that work in animals fail in humans. Here's why peptide rodent data rarely translates.
Read →Oral vs Injectable Peptides: Why the Route Matters
Oral semaglutide has under 1% bioavailability and needs an absorption enhancer. The delivery route can decide whether a peptide works at all.
Read →How to Read a Peptide Study Without Getting Fooled
Fewer than 8% of animal-model drugs survive human trials. A practical filter for reading peptide studies.
Read →Kisspeptin: The Peptide Reshaping Reproductive Research
A genuine area of active clinical science — kisspeptin-54 has triggered egg maturation and live births in IVF trials.
Read →Peptide Bioregulators: Evidence or Marketing?
Khavinson peptides promise organ-specific rejuvenation. After 40+ years, the evidence is mostly cell and animal data with no Western randomized trials.
Read →Follistatin and Muscle Growth: What the Science Says
Blocking myostatin sounds like a shortcut to muscle. The human trials tell a more sobering story.
Read →AOD-9604: The Fat-Loss Peptide That Didn't Pan Out
A growth-hormone fragment trialed for obesity in 500+ adults. The Phase IIb result is the part marketing omits.
Read →How Peptides Are Absorbed: The Bioavailability Problem
Why most peptides are injected, why oral versions are hard, and what oral semaglutide's ~1% bioavailability really shows.
Read →MOTS-c: The Mitochondrial Peptide, Explained
A mitochondrial-derived peptide with striking effects in mice — and only thin, indirect human data.
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