CADENA

THE JOURNAL

Reading worth your time.

Sourced, plain-spoken writing on peptides — no hype, no before-and-afters. Just the science, made legible.

FOUNDATIONS

The four fundamentals that beat any peptide

Before reaching for compounds, master sleep, protein, stress management, and movement. These pillars consistently outperform supplementation when neglected—and amplify results when dialed in.

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WEIGHT LOSS

GLP-1s, explained before you start

GLP-1 receptor agonists are prescription medications that mimic a gut hormone to regulate blood sugar and appetite. Here's what they do, who they're for, and why they require medical supervision.

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RECOVERY

BPC-157 and Recovery: What the Research Supports

BPC-157 has earned a reputation as a healing compound for tissue and gut injuries. The evidence leans toward promise—but the hype often outruns what the literature actually shows.

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FOUNDATIONS

How to Read a Certificate of Analysis

Third-party lab reports reveal what's actually in a vial before you buy. Here's how to interpret the numbers that matter and spot the red flags that don't.

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COGNITIVE & LONGEVITY

Where to Start with Longevity Peptides

The longevity conversation often sounds like science fiction. Here's a measured introduction to peptides studied for healthspan—and what the evidence actually shows.

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FOUNDATIONS

How Peptides Are Administered: Routes and the Basics of Safety

Subcutaneous, intramuscular, oral, topical, nasal — understanding the common routes of peptide administration and the fundamental safety considerations for each approach.

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FOUNDATIONS

Reconstitution Basics: Turning Powder Into a Usable Solution

Why peptides arrive as freeze-dried powder, what bacteriostatic water actually does, and the chemistry behind turning vials into injectable solutions.

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FOUNDATIONS

Understanding dosing language: mcg, mg, IU, and units

The vocabulary of peptide dosing isn't complicated once you know what each term measures. This guide decodes the units so conversations with practitioners become less intimidating.

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FOUNDATIONS

Storage and Handling: Keeping Peptides Stable

Peptides are fragile molecules that degrade quickly under the wrong conditions. Cold chain, light exposure, and reconstitution shelf life determine whether your peptide retains potency.

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FOUNDATIONS

Side Effects and Safety Monitoring: What to Watch, When to Stop

Peptides are generally well-tolerated, but they're not risk-free. How to think about side effects, what warning signs matter, and when self-experimentation should end.

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WEIGHT LOSS

Semaglutide vs. Tirzepatide: How the GLP-1 Options Differ

Both work on hunger signaling, but tirzepatide targets two pathways instead of one — a difference that shows up in trial outcomes and tolerability.

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RECOVERY

TB-500 and tissue repair: what the evidence shows

TB-500 shows promise for flexibility and tissue healing in animal models, but human evidence remains sparse. What we know — and what we don't.

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FOUNDATIONS

Peptide stacking: principles, rationale, and cautions

Combining peptides can amplify results or address multiple goals at once — but stacking requires understanding mechanisms, timing, and where synergy ends and risk begins.

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FOUNDATIONS

Cycling and washout periods: why people structure protocols in phases

Many peptide protocols involve scheduled breaks rather than continuous use. Understanding the reasoning behind run/washout cycles helps you recognize when structure matters.

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FOUNDATIONS

Working with a practitioner: what to ask before you start

Finding the right licensed practitioner makes all the difference. How to assess expertise, ask the right questions, and build a relationship based on clarity and safety.

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FOUNDATIONS

Peptides, without the noise

A two-minute primer on what peptides are, what they are not, and how to think about them without the hype.

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ANTI-AGING

GHK-Cu and skin: what the research supports

The copper peptide that shows up in every anti-aging conversation — what the evidence actually says, and where the hype outruns it.

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