The books
Understand the claim.
Prepare for the decision.
Borrowed Signals examines the science and the market behind peptide therapy. Applied Peptide Therapy focuses on the practical questions of baseline measurement, monitoring, and reassessment. Choose the depth you need, or explore both perspectives together.

The principal book
Borrowed Signals
The Science, Hype, and Hidden Biology of Peptide Therapy. By Dr. Anthony G. Beck.
Peptide research, clinic claims, and personal testimonials can sound equally convincing. Borrowed Signals gives you a method for telling them apart.
Dr. Anthony G. Beck begins with the pharmacology that governs peptide signaling, then introduces a structured approach to evaluating claims. The book separates the strength of a study’s design from what it actually found, examines how conclusions become exaggerated, and applies that reasoning across a broad compound reference.
Along the way, it investigates product provenance, the regulatory landscape, commercial incentives, and the culture of self-experimentation. The goal is to help you examine the next claim for yourself.
Inside the book
- Peptide pharmacology, routes, exposure, and dose reasoning.
- The GPS Claim Auditor and evidence grading.
- The Distortion Chain and Five-Table Autopsy.
- Compound assessments organized by class.
- Product provenance, regulation, and the peptide marketplace.
- Individual biology and the limits of measurement.
For readers who want the deeper scientific reasoning and a method they can apply beyond a single compound.
- Book
- $49.99
- S&H
- $18.95
- Subtotal before tax
- $68.94
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Explore What's InsideThe companion
Applied Peptide Therapy
A Practical Guide to Peptides, Monitoring, and Risks. The companion to Borrowed Signals, by Dr. Anthony G. Beck.
A decision about peptides begins with more than choosing a compound. Applied Peptide Therapy organizes the questions that come before, during, and after that decision.
Work through the sequence of qualifying the goal, establishing a baseline, defining what to monitor, and deciding in advance what would prompt reassessment. Explore product provenance, monitoring considerations by compound class, and profiles that distinguish studied uses from marketed promises.
The companion also examines what measurement can and cannot establish. It gives readers a structure for a better-informed conversation with a qualified clinician.
Inside the book
- Qualify, Quantify, Measure, Monitor.
- Baseline measurement and its interpretive limits.
- Defined targets, success criteria, and stopping rules.
- Product identity and provenance questions.
- Monitoring considerations by compound class.
- Compound profiles covering evidence, risks, and reassessment.
Includes educational compound profiles, not dosing recommendations or administration instructions.
For readers who want a practical structure for the decisions and monitoring surrounding peptide use.
- Book
- $29.99
- S&H
- $9.95
- Subtotal before tax
- $39.94
Online checkout is not yet active. No order is placed and no payment is collected.
Explore What's Inside


The two-book bundle
Two books. Two essential perspectives.
Borrowed Signals asks what supports the claim. Applied Peptide Therapy asks what should be established, monitored, and reconsidered around the decision. Together, they connect critical reading of the evidence with a practical framework for asking better questions about your own situation.
$69.99 $79.98 when purchased separately
Book-price savings rounded from $9.99.
+ $18.95 shipping & handling (both books ship together)
- Borrowed Signals: Hardcover · 7 × 10 inches · 554 pages
- Applied Peptide Therapy: Softcover · 6 × 9 inches · 288 pages
In stock
- Books
- $69.99
- S&H
- $18.95
- Subtotal before tax
- $88.94
Online checkout is not yet active. No order is placed and no payment is collected.
Which is right for you
Choose your starting point.
Borrowed Signals
Hardcover · 554 pages
$49.99
+ $18.95 shipping & handling
Choose this for the deeper science, claim-evaluation method, and broad compound reference.
- Examine the evidence.
- Understand pharmacology and provenance.
- Evaluate claims across the market.
Two-Book Bundle
Hardcover + Softcover
$69.99
+ $18.95 shipping & handling (both books ship together)
Choose both to connect the evidence behind the claim with the decisions surrounding its use.
- Comprehensive reference.
- Practical decision framework.
- Both books together.
Applied Peptide Therapy
Softcover · 288 pages
$29.99
+ $9.95 shipping & handling
Choose this for baseline questions, monitoring considerations, and a structured approach to reassessment.
- Establish a starting point.
- Define what to monitor.
- Understand stopping criteria.
Questions