Medical Disclaimer

No medical advice

The content published on chronobiohacker.com — articles, pillar guides, downloadable PDFs, email newsletters, videos and social media posts — is provided for general informational and educational purposes only. It reflects our reading of the published scientific literature at the time of writing.

It is not medical advice, not a diagnosis, not a treatment plan, and not a recommendation for any individual. We do not know your medical history, your medications, your laboratory results or your circumstances. General information cannot account for any of them.

No physician–patient relationship

Reading this site, subscribing to our emails, downloading a guide or contacting us does not create a physician–patient relationship, a therapeutic relationship, or any professional duty of care between you and ChronoBiohacker or anyone associated with it.

We cannot answer questions about your personal medical situation, interpret your test results, or advise on your treatment. If you send us such a question, we will decline and refer you to a qualified professional.

Always consult a qualified professional

Before making any change to your health regimen, consult a physician or another appropriately qualified healthcare professional. This applies with particular force if any of the following describes you:

• You have a diagnosed condition, including diabetes, cardiovascular disease, kidney or liver disease, a thyroid disorder, an autoimmune condition or a mental health condition
• You take prescription medication of any kind — several supplements discussed on this site have documented drug interactions
• You are pregnant, trying to conceive, or breastfeeding
• You have a history of disordered eating, or your relationship with food or exercise has been a source of difficulty
• You are under 18, or you are considering applying anything from this site to someone under 18
• You are scheduled for surgery, or are recovering from a procedure or an acute illness

Never disregard professional medical advice, and never delay seeking it, because of something you read here.

Emergencies

Supplements, doses and regulatory status

Where a dose appears on this site, it describes a range reported in published studies or commonly used in the literature. It is a description of research, not a prescription, and not a recommendation for you.

• Dietary supplements are regulated differently from medicines. In the United States, statements about supplements on this site have not been evaluated by the Food and Drug Administration, and no product discussed here is intended to diagnose, treat, cure or prevent any disease.
• Regulatory status varies by country and changes over time. A compound that is lawfully sold as a supplement in one market may require separate authorization, or be unavailable, in another. We note this where we are aware of it, but you should verify the current status in your own country before purchasing.
• Supplement quality varies widely. Independent third-party testing and published certificates of analysis are the only practical way to know what a product actually contains.
• Several compounds discussed here interact with prescription medication. Interaction risk is a matter for your physician or pharmacist, not for a website.

Fasting, caloric restriction and thermal stress

This site discusses time-restricted eating, extended fasting, mild caloric restriction, cold exposure and sauna use. These practices carry real risks for some people and are not appropriate for everyone.

Fasting and caloric restriction are not appropriate if you are pregnant or breastfeeding, if you are underweight, if you take glucose-lowering medication, or if you have a history of disordered eating. Cold and heat exposure carry cardiovascular risk and are not appropriate for everyone. If any of this applies to you, speak to your physician first — and if content about restriction, tracking or body composition tends to make things harder for you rather than easier, this site may not be a helpful place for you to spend time, and reaching out to a professional is the more useful step.

Consumer devices are not medical devices

Wearables, rings, smartwatches, continuous glucose monitors sold over the counter, at-home test kits and epigenetic age tests are consumer products. Except where a specific device carries a specific regulatory clearance for a specific use, they are not diagnostic instruments.

Their measurements are estimates produced by proprietary algorithms, and their accuracy varies by metric, by device and by individual. Use them for trends and behavioral feedback. Do not use them to diagnose a condition, to decide whether to seek care, or to adjust medication. If a device reading concerns you, take it to a clinician rather than acting on it alone.

Individual variation and no guarantee of results

Biological responses differ between individuals, sometimes dramatically. Two people following an identical protocol can obtain entirely different results, and evidence drawn from population averages says little about what will happen to any one person.

We make no promise, warranty or guarantee of any particular outcome. Nothing on this site should be read as a claim that a protocol will extend your life, reverse aging, prevent disease or produce any specific benefit.

Scientific accuracy and currency

We verify claims against primary literature before publication and cite sources so you can check them yourself. We calibrate our language to the strength of the evidence, and we say so plainly when evidence is preliminary, contested or limited to animal studies.

Even so, science moves. A page accurate on its date of publication may be superseded. Publication and update dates appear on every guide. If you find an error, tell us — we will correct it and note the correction.

Third-party links and commercial relationships

This site links to external websites, studies, products and services that we do not control. We are not responsible for their content, their accuracy, their privacy practices or their availability. A link is not an endorsement of everything a third party says or sells.

Some links may be affiliate links, meaning we may earn a commission if you buy through them at no additional cost to you. Where that is the case, it is disclosed clearly on the page, next to the link. Our selection criteria are evidence quality, independent validation and real-world reliability — never commission rate. Commercial relationships never determine what we recommend or how we describe the evidence.

Limitation of liability

You use this site and act on its content at your own risk and on your own responsibility. To the fullest extent permitted by applicable law, ChronoBiohacker and its contributors accept no liability for any loss, injury, damage or adverse outcome arising from the use of, or reliance on, information published here.

Nothing in this notice excludes or limits any liability that cannot lawfully be excluded or limited, including liability for death or personal injury caused by negligence, or for fraud.

Scope and changes to this notice

This disclaimer applies to the whole of chronobiohacker.com, including all articles and pillar guides, all downloadable materials, all email content, and any social media or video content we publish.

We may update this notice as the site develops or as legal requirements change. The effective date at the top of this page reflects the current version. Continued use of the site after an update constitutes acceptance of the revised notice.