Biological age
Biological age is an estimate of how old your body seems, as opposed to the years in your passport. It is calculated from measurements such as blood values or changes to your DNA.
- Measured via
- DNA methylation, blood values, fitness
- Standard
- None, results differ by test
- Useful as
- A trend over years, not a single value
Two people aged 50 can be physically very different. Biological age tries to capture that difference in a number. If it is lower than your actual age, that is seen as a good sign.
Best known are the so-called epigenetic clocks. They measure chemical marks on the DNA that change with age. Other methods use blood values, fitness, arterial stiffness or the length of telomeres.
Important: there is no single standard. Different tests can give different results for the same person. A value is most useful when it is repeated with the same method over years and shows whether your habits make a difference.
Good to know
- Ask which method is used and who explains the result to you.
- A poor value is not a verdict, but a reason to talk about exercise, sleep and nutrition.
- Do not let anyone sell you something just because a number unsettles you.
At Luxly
Houses where you can experience it:
Der ÖschberghofDonaueschingen, Black ForestThe longevity centre is all about these questions of ageing.
Buff Medical ResortKonstanz, Lake ConstanceComprehensive diagnostics with medical interpretation.
Frequently asked questions
Can you lower your biological age?
Studies show that some values change with exercise, nutrition, sleep and less stress. How much and how lasting is not yet well researched. Honestly: the habits matter more than the number.
How reliable are biological age tests?
They are interesting, but not as precise as a lab value for cholesterol. Different providers often arrive at different numbers. Use them best as a trend with the same test.
Related terms
Updated on 17 October 2026