3 Tests That Reveal How Well You're Ageing

Your driver’s licence says you’re 65, but your biological age might be 58… or 72.

That gap is the difference between finishing a 3 mile charity walk—or watching from the sidelines.

Below are the 3 evidence‑based tests we consider the “North Star” metrics of healthy ageing. Use them to track progress and course‑correct long before chronic disease shows up.

Epigenetic DNA‑Methylation Clock

What it is: A cheek‑swab or blood‑spot test that measures DNA methylation patterns linked to ageing. (e.g. TruDiagnostic, Elysium’s Index and GlycanAge)
Why it matters: Most accurate snapshot of whole‑body ageing—often ±2 years.
Target: Aim for a biological age equal to—or younger than—your chronological age.

Metabolic Blood Panel

Markers that count:

• Fasting insulin

• HbA1c

• Triglyceride‑to‑HDL ratio

• High‑sensitivity‑CRP (inflammation)

Why it matters: Metabolic dysfunction is behind ~70 % of chronic disease.

Targets (ideal):

• Insulin <10 μIU/mL

• HbA1c <5.4 %

• TG/HDL <1.5

• hs‑CRP <1 mg/L

Instead of piecing together scattered lab results, InsideTracker runs a single, at-home blood panel focused on longevity biomarkers—glucose, fasting insulin, triglycerides, ApoB, hs-CRP, vitamin D, and more—then translates them into an “InnerAge” score and gives you personalized food, supplement, and lifestyle recommendations.

Dexa or BIA Body‑Comp Scan

What it is: Whole‑body imaging that shows lean mass, bone density, visceral fat.
Why it matters: Muscle is the “longevity organ.” Visceral fat and low bone density drive frailty, diabetes, and fractures.
Targets:

• Visceral fat <1 kg (Dexa)

• T‑score ≥ –1.0 (normal bone density)

• Skeletal Muscle Index in top half for age/sex

How to Put This Into Action

1. Pick one test this month (epigenetic or metabolic panel will give you the best insights).

2. Re‑test every 6–12 months—small habits compound, and numbers don’t lie.

3. Need a trusted lab kit? We recommend TruDiagnostic.

Next email, we’ll show you how to turn raw results into an action plan—so you’re not just collecting data, but using it to live longer with purpose.

To living better for longer,

Jake McKeon
Founder, Longevity Daily

P.S. Got questions about labs or interpreting results? Hit reply—our team of healthspan coaches reads every message.