Comprehensive comparison of DHEA and pregnenolone: steroidogenesis pathways, distinct mechanisms, age-related decline data, research dosing (25-50mg DHEA vs 50-100mg pregnenolone), women's health applications, adrenal context, and lab testing guidance.

Comprehensive resveratrol research guide covering SIRT1 activation, trans vs cis isomers, bioavailability challenges, micronized and liposomal forms, 150-500mg dosing protocols, and the NMN+resveratrol combination rationale from longevity research.

A comprehensive research overview of GHK-Cu (copper peptide) — covering collagen synthesis mechanisms, topical vs subcutaneous administration, reconstitution protocols, and how it compares to other skin peptides.

Research comparison of IV NAD+, NMN, NR, and sublingual routes — covering bioavailability, PARP enzyme substrate, sirtuin activation, mitochondrial biogenesis, IV flush effects, and typical clinical protocols from 500–1500mg.

A research overview of four longevity-focused peptides — Epitalon, MOTS-c, SS-31, and Humanin — covering mechanisms, typical research doses, and how they may complement each other.

Epitalon and Epithalon are the same tetrapeptide. Naming disambiguation, telomerase activation research, dosing protocols, and longevity stack context clarified.

NMN vs NR vs nicotinic acid: bioavailability, dosing ranges, sirtuin research, and how to stack NAD+ precursors with longevity peptides.

Epitalon research overview: telomerase activation mechanism, pineal peptide background, typical research dosing context, and storage notes for this longevity compound.

Research overview of the four most-studied longevity peptides: Epitalon (telomerase), MOTS-c (mitochondrial metabolism), SS-31 (mitochondrial membrane), and Humanin (cytoprotection). Includes dosage tables and reconstitution math.

GHK-Cu research guide covering injectable reconstitution math, topical application context, collagen and angiogenesis mechanism, and syringe unit calculator.