Affiliate & partner disclosure: This article contains affiliate links, and I may earn a commission if you buy through them at no extra cost to you. As an authorised LifeWave Brand Partner, I have a financial interest in promoting LifeWave products. Testimonial/editorial given by a LifeWave brand partner with financial interest in promoting the product. Full disclosure at the end.
A note before we start. This is general information, not medical advice. Consumer biological-age tests vary in accuracy. Talk to your GP before fasting or starting supplements if you have a medical condition or take medication. No LifeWave product — patch or water system — lowers biological age or treats any condition.
Your birthday tells you how long you’ve been alive. Biological age tries to estimate how your body is actually ageing. The gap between the two is one of the most useful ideas in longevity — as long as you treat the numbers as estimates.
Key takeaways
- Epigenetic clocks are the leading research tool; consumer tests vary.
- Fitness, strength and simple blood markers are cheap, powerful proxies.
- Exercise, sleep, diet, a healthy weight and not smoking have the strongest evidence.
- Be sceptical of products promising to “reverse” your age.
Why it matters
Biological-age measures, especially newer epigenetic clocks, predict health outcomes better than birthdays alone. Unlike chronological age, they respond to habits.
How it’s measured
- Epigenetic clocks (Horvath, PhenoAge, GrimAge, DunedinPACE) — DNA methylation patterns.
- Telomere length — noisy for individuals.
- Blood biomarkers — CRP, HbA1c, lipids; PhenoAge combines several.
- Function — VO2 max, grip strength, walking speed, sit-to-stand.
What accelerates ageing
Chronic inflammation, poor sleep, visceral fat, inactivity, smoking, heavy drinking and chronic stress.
What helps
- Resistance training — I lift every second day with the RP Hypertrophy app.
- Cardio and daily movement — 10,000+ steps for me.
- Sleep, consistently timed.
- Mediterranean-style eating and enough protein.
- Healthy weight. In the CALERIE trial, modest calorie restriction slowed the pace of ageing on the DunedinPACE clock.
- Hydration — a 2023 NIH study linked higher serum sodium (a sign of lower hydration) with faster biological ageing. Ordinary water is fine.
- Heat and cold — I use cold plunge, sauna and steam most days; evidence is still emerging.
Supplements such as NMN, spermidine or senolytics are interesting but unproven for ageing in humans; see NMN vs NR.
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Join free →Where does LifeWave fit? X39, which I wear daily, is a non-transdermal, general-wellness phototherapy patch that gently stimulates the skin with light to support the body’s natural energy flow for strength and stamina — an optional extra, not a biological-age intervention. LifeWave’s X2O water system: filtration is sensible, hydrogen research is early and mixed, light infusion is unproven. I don’t own one.
Shop X39 at my LifeWave store →
Frequently asked questions
Biological vs chronological age?
Chronological is years lived; biological estimates how your body is ageing.
Can you reverse biological age?
Some markers improve with lifestyle change; claims of large “reversals” deserve scepticism.
How do I test it?
Start with fitness, strength and a basic blood panel. Epigenetic tests are optional extras.
Do LifeWave products treat any condition?
No. No such claim is made. LifeWave products are not intended to diagnose, treat, cure or prevent any disease.
Related reading
What Is Biological Age? · Epigenetic Age · VO2 Max · How to Track Your Longevity
Full disclosure. This article is general information, not medical advice. LifeWave products are not intended to diagnose, treat, cure or prevent any disease; statements about them have not been evaluated by the FDA. As an authorised LifeWave Brand Partner I have a financial interest in promoting LifeWave products.
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