Aging is a concept that extends beyond just counting the years as they pass by. While chronological age is the number of years since birth, biological age reflects the state of our body’s systems and how well they are functioning. This distinction is crucial for understanding true health and longevity.

Chronological Age vs. Biological Age
  • Chronological Age: The actual time you have been alive, measured in years.
  • Biological Age: An estimation of your body’s functional and physiological state. This can be influenced by various lifestyle factors and is not necessarily tied to your chronological age.

For example, a person might be 25, 30, 54, or even 75 years old chronologically, but their biological age could be significantly different. It’s this biological age that is a more accurate representation of your overall health and longevity.


Key Determinants of Biological Age

Two main factors that influence biological age are VO2 max and fat-burning efficiency.

VO2 max is the maximum rate of oxygen consumption measured during incremental exercise. It is a critical indicator of cardiovascular health and aerobic endurance. 

Higher VO2 max levels are associated with:

  • Better heart and lung function.
  • Improved circulation and oxygen delivery to tissues.
  • Enhanced overall physical fitness.

As we age, VO2 max typically declines, but regular physical activity can help maintain or even improve it, thus positively affecting biological age.

Fat-burning efficiency is closely tied to mitochondrial health. Mitochondria are the powerhouses of our cells, converting nutrients into energy. Efficient fat burning indicates:

  • Healthy mitochondrial function.
  • Better energy utilisation.
  • Reduced risk of metabolic diseases like diabetes and obesity.

A decline in mitochondrial function can lead to decreased energy levels and increased fat storage, both of which are markers of aging. A diet and exercise regime personalised to you will enhance fat-burning efficiency, thereby reducing biological age.

Our Approach to Longevity at Precision Health

At Precision Health, our goal is to not just extend lifespan but to ensure that those extra years are lived in good health. This concept is known as longevity—living long and healthy.

To achieve this, we focus on improving key health metrics using advanced tools like the PNOE metabolic analysis. This comprehensive test measures VO2 max, fat-burning efficiency, and other critical markers of metabolic health. By understanding and optimising these parameters, we help our clients achieve a lower biological age, reflecting a healthier state.

Consider this client who is chronologically 72 years old but has a biological age of 60. This significant difference is achieved through personalised interventions aimed at enhancing VO2 max and fat-burning efficiency, among other factors. The client’s metabolic analysis results, showcased in the accompanying images, highlight the effectiveness of our approach.



Aging is much more than simply the passing of time. It’s about how well your body functions as you age. By focusing on key determinants like VO2 max and fat-burning efficiency, we can more accurately assess and improve your biological age, ensuring you live a longer, healthier life.

At Precision Health, we are dedicated to helping you achieve optimal health and longevity. Through our personalised approach and advanced metabolic analysis, we provide the tools and guidance necessary to make meaningful improvements in your health.

If you’re interested in learning more about how we can help you lower your biological age and improve your overall health, contact us today to schedule your PNOE metabolic analysis.


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