
What bloodwork actually matters in your 40s
ApoB, ferritin, hormones, inflammation — the markers worth knowing, and how to read them.
10X Health is a precision health and genetic testing platform positioned around performance, wellness, methylation, and personalized optimization.
People interested in genetic testing, methylation insights, personalized supplement protocols, and high-agency health optimization.
These are editorial signals, not endorsements. Always pair with qualified medical guidance.
A short due-diligence list to apply before paying, booking, subscribing, or building a routine around any longevity tool, test, or program.
What exactly will this measure, track, or improve — and over what time horizon?
Is there medical or clinician oversight, and how qualified are the people behind it?
How should I interpret the data, and what does a meaningful change actually look like?
What will I do differently with the results? If the answer is unclear, the signal isn't useful yet.
Is the claim evidence-led or marketing-led? Where is the underlying research?
What is the true cost after the first purchase, test, or subscription — including renewals?
Does this replace medical advice? It should not. Where does professional care still belong?
How does this compare to simpler, lower-cost, or higher-evidence alternatives?
DexaFit offers DEXA body composition scans, VO2 max testing, RMR testing, and related health metrics.
Ezra offers full-body MRI screening aimed at detecting potential cancer and other abnormalities.
Prenuvo offers whole-body MRI screening and related imaging insights for proactive health assessment.
Elysium Index is an at-home biological age test positioned around epigenetic aging analysis.
Everlywell offers at-home health tests across hormones, heart health, food sensitivity, women’s health, men’s health, and general wellness.
Genetic and methylation testing can be overinterpreted. Users should ask what is clinically actionable, how recommendations are generated, and whether qualified clinicians are involved.

ApoB, ferritin, hormones, inflammation — the markers worth knowing, and how to read them.

What each test really tells you — and where the marketing outruns the science.