Medical Disclaimer

1. What Calibrated Signal is, and what it isn't

Calibrated Signal is an evidence-first publication about longevity, cardiovascular health, and the science of aging. The content is journalism: it explains what studies found, what the authors interpreted, and what the editor thinks those findings mean at a population level. It is written for curious adults who want to read the underlying science critically rather than accept claims from influencers, brand marketers, or wellness gurus at face value.

Calibrated Signal is not medical advice. Reading the Site, subscribing to the newsletter, taking a quiz, or emailing the editor does not create a clinician-patient relationship, a nurse-patient relationship, or any other professional relationship between you and Nick Hanson or Calibrated Signal LLC. Nothing on the Site is a diagnosis, a treatment recommendation, a prescription, or a substitute for the care of a clinician who knows you, your history, your medications, and your circumstances.

2. About Nick's credentials

Nick Hanson is a Mayo Clinic emergency-department registered nurse (RN, CEN), a doctoral candidate (ABD) in Bioinformatics and Computational Biology at the University of Minnesota and Mayo Clinic, and an APRN-FNP candidate at Duke University in the cardiology specialty track. He is also a coronary stent recipient and a former 15-year CEO in the supplement/functional-beverage industry. These credentials are why he is able to read the primary literature, evaluate study design, and translate clinical research into plain-language editorial coverage.

None of those credentials authorize Nick to be your clinician through this Site. He is not your emergency-department nurse, your nurse practitioner, your physician, or your researcher. He cannot diagnose your symptoms, interpret your test results for you, recommend a treatment for your condition, or tell you what to do about your specific situation. He is a journalist who happens to have a clinical background, and that background is the reason the editorial standards on this Site are what they are — not a license to provide care.

The views expressed on Calibrated Signal are Nick's own. They do not represent the positions of Mayo Clinic, Duke University, the University of Minnesota, or any other institution with which he is affiliated.

3. Talk to your own clinician

Always seek the advice of your physician, nurse practitioner, or other qualified health-care provider with any questions you may have about a medical condition, a symptom, a medication, a supplement, a procedure, or a screening test. Specifically:

• Before changing or stopping a medication. Articles on this Site may discuss medications in general terms; that is not a recommendation to start, change, or stop yours.
• Before starting a supplement. Supplements can interact with medications and conditions. Do not start one based on anything you read here.
• Before changing your diet, exercise, sleep, or stress-management routine in a meaningful way. What is safe and effective for a population is not always safe or effective for an individual.
• Before ordering a test, a scan, or a screening study based on something you read here. Articles may explain why certain tests are informative; your clinician is the right person to decide which tests are appropriate for you.

4. About the Heart Screening Quiz

The Heart Screening Quiz produces an awareness score, not a diagnosis or a risk estimate.

The quiz is designed to surface gaps in what you know about your own cardiovascular profile — whether you know your blood pressure, whether you've had a coronary artery calcium scan, whether your lipid panel includes ApoB and Lp(a), whether you understand your family history. It tells you which conversations to have with your clinician. It does not tell you what your actual cardiovascular risk is, and it is not a substitute for clinical risk assessment.

Clinical cardiovascular risk assessment requires real measurements: blood pressure, a current lipid panel, a fasting glucose or HbA1c, an assessment of family history, and — in many cases — additional testing such as a coronary artery calcium (CAC) scan. The quiz tells you which of those measurements you may be missing. It does not perform them.

5. Supplements, interventions, and FDA disclaimers

When Calibrated Signal evaluates the evidence for a supplement, intervention, or longevity claim, the evaluation is editorial commentary on published research. It is not a recommendation that any reader take, avoid, or change their use of any specific product.

Statements made about dietary supplements on this Site have not been evaluated by the Food and Drug Administration. No content on this Site is intended to diagnose, treat, cure, or prevent any disease.

6. Forward-looking and evolving science

Scientific understanding changes. We cite primary literature and explain what is known as of the publication date; new evidence sometimes overturns earlier interpretations. When that happens, we update the original article and log the change on our Corrections page. Older articles may not reflect current consensus. Always check the publication date and the “Last updated” note on any article before relying on its content.

7. Age and intended audience

Calibrated Signal is intended for adults aged 18 and over. Content addresses adult cardiovascular and longevity topics and is not suitable for children or adolescents.

8. No liability

To the maximum extent permitted by law, Calibrated Signal LLC, Nick Hanson, and any contributors disclaim any liability for any direct, indirect, incidental, consequential, or special damages arising from your use of the Site or your reliance on any content on the Site. The Site is provided “as is” without warranties of any kind, express or implied.

9. Affiliate relationships

The Site contains affiliate links to a limited set of third-party diagnostic, lab-testing, wearable, and book products. These relationships are disclosed in detail on our Disclosures page and on every article where they appear. Affiliate relationships do not influence editorial coverage, and we do not accept affiliate revenue for any supplement or pharmaceutical product.

10. Contact

Questions about this disclaimer can be sent to nick@calibratedsignal.com. For corrections to a specific article, see our Corrections page.