Know who is talking before you listen

Every piece of health information comes from somewhere. Before I read a single chapter of a book, I want to know who wrote it, why, and what they gain if I believe them. That is not cynicism. It is the first step of reading anything properly.

So here is what The Complete Guide to Peptides: Unlocking the Secrets to Health, Healing, and Longevity tells us about itself.

The author is "Hack Smith". The disclaimer states plainly that this is an alias. The "Who Am I?" page describes the author as a peptide enthusiast and researcher, and then lists social media accounts on TikTok, Instagram, Facebook and YouTube under a "Peptalk Biohacking" brand. No qualifications are given. The disclaimer also includes an affiliate disclosure: some links in the book may earn the author a commission.

None of that makes the book wrong. Plenty of anonymous writers are careful, and plenty of credentialed ones are not. But it tells you the frame. This is a book by an online biohacking personality, with a commercial relationship to at least some products. Read it the way you would read a well-informed friend who also sells things, and you will get the most from it.

What the book actually is

With that settled, this book is genuinely useful in one specific way. It is an encyclopedia.

The bulk of it is an A to Z of more than 80 peptides, peptide-like drugs and "bioregulators", from 5-Amino-1MQ to Zhenoluten. Every entry follows the same six-part template:

  1. Origin: where the compound comes from
  2. Mechanism: how it is thought to work
  3. Impact: what it is claimed to do
  4. Dosage and Administration
  5. Safety Profile
  6. Research Recommendations

That consistency is the book's biggest strength. If someone mentions a peptide name you have never heard of, you can flip to the entry and in two minutes know roughly what category it belongs to and what people claim for it.

The book also includes short chapters on administration routes, reconstitution, dose calculation, cycling, stacking, safety monitoring, sourcing, legal status and common myths.

The feature I wish every health book had

The sixth section of every entry is the one I want to highlight: Research Recommendations.

For each compound, the book gives two to five search phrases. For example, for ARA-290 it suggests searching "ARA-290 small fiber neuropathy clinical trial". For Kisspeptin: "Kisspeptin clinical trials reproductive health". For Semaglutide: "Semaglutide obesity treatment clinical trial".

This is a small idea with a big effect. Instead of asking you to take its word, the book hands you the tools to check it. Type those phrases into PubMed, the free database of medical research run by the US National Library of Medicine, and you can find the actual studies. You can see whether they were in humans or mice, how many people were involved, and what was found.

In a genre full of books that expect blind trust, a book that points you to the research is doing something right. Part 8 of this series will show you how to use those search terms well.

The honest framing in its myths section

Near the end, the book includes a section on peptide myths, and it pushes back on several ideas the online peptide world tends to spread:

  • Peptides are not magic pills and results take weeks, with diet, training and rest still doing much of the work.
  • Peptides are not all safe or side effect free. Headaches, nausea, dizziness, allergic reactions and hormonal imbalances are possible.
  • Peptides do not all work the same way. A growth hormone releaser and a tissue repair peptide are completely different tools.

That is sound. It is not what a pure hype book would include.

A book that includes real medicines

Something else surprised me. Mixed in with the research compounds are established, approved medicines: liraglutide, semaglutide, tirzepatide, tesamorelin, calcitonin, oxytocin, triptorelin and ACTH. These are drugs used in hospitals and clinics every day.

That turns out to be one of the most educational things about the book, because it lets you see approved and unapproved compounds side by side, in the same format. Part 6 is about what you can learn from that comparison.

What this series will cover

Over eight parts I will take this book seriously as a reference and critically as a source.

Part 2 covers the dose and reconstitution maths, which applies to any liquid medicine. Part 3 walks through the weight loss drug family tree, which this book lays out better than most. Part 4 explains bioregulators, a concept most Western readers have never heard of. Part 5 looks at the longevity peptides and "zombie cells". Part 6 is about the approved medicines hidden in a biohacking book. Part 7 is the critical instalment, and it is a serious one: a lot of the book's dosing turns out to come from a shop. Part 8 brings it together with the monitoring and myth-busting sections.

Keep the frame from the start of this article in mind. It will matter.

This series reviews a consumer book, not a clinical guideline. Many compounds it discusses are not approved for human use in most countries. Nothing here is medical advice or a recommendation to use any substance. Speak to a qualified clinician before starting anything.