Why Men Should focus on Biological Age Testing in London (Not Just Birthday Candles)
- Rick Miller
- May 28
- 2 min read
Updated: 7 days ago
Biological age testing is a new paradigm
Turning 50 doesn’t mean much if your body is ageing like it’s 65. That’s the difference between chronological age (the number on your passport) and biological age (how your cells are performing). For executives in London, understanding this difference is the ultimate edge in energy, performance, and longevity.

What Is Biological Age?
Chronological age: years lived.
Biological age: cellular ageing measured by markers like inflammation, DNA methylation, and metabolic health.
Biological age can be younger or older than your birthday age.
Why Executives Should Care
Workload stress = faster ageing (telomere shortening, mitochondrial decline).
Circadian disruption from travel = older biological age.
Hormones & body composition shift earlier under chronic stress.
How Biological Age testing Is Measured
DEXA scan: body composition, visceral fat.
Bloods: inflammatory markers, lipids, glucose, hormones.
Functional tests: VO2 max, RMR.
DNA-based tests: epigenetic clocks (cutting-edge)
Case Example
A 47-year-old CEO presented to us at Miller Health with generalised fatigue. His chronological age = 47. Biological age test = 55. After circadian reset, nutrition, and hormone optimisation we reduced his biological age reduced by 7 years in 12 months.
Practical Steps
Test once a year to benchmark.
Focus on sleep, stress, and nutrition — the biggest levers.
Pair biological age testing with an executive MOT for a complete view.
FAQs
Can biological age go backwards? Yes, with lifestyle and targeted interventions.
Is this just for athletes? No, it’s more relevant to executives with stress-driven ageing.
Why London? Because Harley Street offers access to the most advanced diagnostics in the UK.
Closing Thought
Your birthday is fixed. Your biological age isn’t. If you want to perform like you’re 40 when you’re 55, this is the test that shows you how.
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