E-book · Olli Sovijärvi & Teemu Arina
Biohacker's Guide to Ketosis
Biohacker's Handbook: Special Issue

A 37-page, fully referenced overview of ketosis and the ketogenic diet: what it actually is, what the evidence supports, and how to do it without the mistakes most people make.
19 €+ VAT if applicable · 37 pages · 87 sources · instant PDF download

What readers say
Reviews from our store
Great guide
My overall experience was great. Thank you for the detailed story!
Biohacking 25
I am excited to read all this information and have iT all by hand! IT is all well documented and although I know many things allready I find it good to read again
Solid set of Biohacker must health books
Supernice! Thanks, enjoyed reading and learned a lot!
Amazing value
These books provide immense information and tools, to improve your health and wellbeing. Easy to read and beautifully presented, I highly recommend it!
What it is
Ketosis, without the myths
Biohacker's Guide to Ketosis corrects several of the myths, misconceptions and fears associated with ketosis and the ketogenic diet. Ketosis is natural for the body and part of normal metabolism: we are built to burn fat for energy and to store the excess in adipose tissue. The process matters most when there is not enough energy coming from food.
The ketogenic diet was used to treat epilepsy with promising results until medication revolutionised the treatment and the dietary route was largely forgotten. Over the past twenty years it has become popular again, and not only for epilepsy: a number of clinics now specialise in strict dietary treatment for epilepsy and other conditions.
Its main application, though, is in weight management, autophagy and the activation of healthy lipid metabolism. That is where the recent growth in interest has come from.
37 pages, designed to be read
Illustrated throughout and laid out for a screen, so it works on a phone as well as a desktop.

- 37
- pages
- 87
- sources
- 12
- sections
The contents
What the guide covers
- 01History of the ketogenic diet
- 02The biochemical special traits of ketosis
- 03The "keto flu" and how to avoid it
- 04The fastest way to achieve ketosis
- 05The health benefits of ketosis
- 06Measuring ketosis
- 07Keto-adaptation and fat burning
- 08The many faces of the ketogenic diet
- 09Guide to calculating macronutrients
- 10Building a nutritious and high-quality ketogenic diet
- 11Exogenous ketones
- 12Intermittent fasting
The authors
Who wrote it
The same pair behind the Biohacker’s Handbook, covering the two halves of the problem: the physiology and the measurement.

Dr. Olli Sovijärvi, M.D.
One of the pioneers of holistic medicine in Finland, who moved from conventional practice into preventive health. He handles the physiology: what ketosis does in the body, what the evidence supports, and where the honest limits of it are.

Teemu Arina
A technologist, entrepreneur and speaker who has spent two decades on the boundary between people and machines. He covers the practical side: measuring ketosis, calculating macronutrients, and knowing which numbers are worth acting on.
Get the book
Start with the science, not the hype
Details
- 37 pages
- 87 sources
- 12 sections
- File format: PDF
Biohacker's Guide to Ketosis
19 €
+ VAT if applicable. One payment, instant PDF download.
Get the e-bookAll common credit cards and online payment methods accepted.
- 100% secure payment
- 24/7 support
- Satisfaction guarantee
- No AI used
Other ways to get this
The same subject taught rather than read, every e-book we have written, or the whole webinar library.
Recorded masterclass
Intermittent Fasting & Ketosis Masterclass
49 €
+ VAT if applicable
Fat-based energy production and cellular renewal, taught rather than read. Watch at your own pace.
- Watch instead of read
- Same subject, taught
60% off · was 167 €
Biohacker's Complete Library
67 €
+ VAT if applicable
Every e-book we have written, this guide included.
- Biohacker's Handbook
- Biohacker's Nutrition Guide: Optimize Your Nutrient Intake
- Gut Mastery: Unlock the Secrets of Optimal Gut Health
- Biohacker's Brain Nutrition Guide
- Biohacker's Immunity Guide
- Biohacker's Cholesterol Guide
Master of Biohacking
HOLOLIFE Webinar Pass
147 €
+ VAT if applicable
Every webinar we have recorded, for people who would rather watch than read.
- Fasting, Intermittent Fasting & Keto
- Joint Health Optimization
- Immune Fitness Across the Lifespan
- Topics for the season ahead, plus the full back catalogue. Subject to change.
Frequently asked
Questions people ask before buying
What do I get for the price?
The complete 37-page guide as a PDF, not a sample or an extract, downloadable straight after checkout. It is yours to keep and to read on any device.
Is this written by AI?
No. The guide was written by two named authors, illustrated by a named designer, and every claim in it is backed by a source. There are 87 of them. The books popularize scientific insights and discoveries, they do not generate them.
Do I need to buy supplements or ketone products?
No. The guide covers exogenous ketones because they exist and people ask about them, but the bulk of it is food, timing and measurement. It is explicit about what the evidence supports.
Is a ketogenic diet safe for everyone?
No, and the guide says so. It is educational material rather than medical advice. Talk to your own physician before making a significant dietary change, particularly if you are being treated for a medical condition or take medication.
Ready to try it?
Get the e-book


