We all know our chronological age: it’s simply the number of years since we were born. But have you ever met someone who seems much younger or older than their age suggests? That’s where the concept of biological age comes in.
Biological age is becoming an increasingly important part of preventative healthcare and longevity medicine because it provides a better picture of how well your body is functioning.
Rather than focusing on the calendar, it looks at the health of your body’s systems and how they may be ageing over time.
What is chronological age?
Chronological age is fixed. It increases by one year every birthday and cannot be changed. While age is an important risk factor for many health conditions, it doesn’t tell the whole story.
Two people who are both 50 years old may have very different levels of health, energy and resilience. Lifestyle, genetics, nutrition, stress, sleep, exercise and environmental factors all influence how the body ages.
What is biological age?
Biological age estimates how old your body appears based on measurable health indicators.
Instead of looking at your birth date, biological age considers factors such as:
- Cardiovascular health
- Metabolic health
- Inflammation levels
- Blood pressure
- Cholesterol
- Blood glucose regulation
- Body composition
- Kidney and liver function
- Hormone balance
- Lifestyle habits
These factors can indicate whether your body is ageing more slowly, more quickly or roughly in line with your chronological age.
Why does biological age matter?
Understanding your biological age can help identify areas where improvements could reduce your future risk of chronic disease.
For example, someone with elevated inflammation, poor metabolic health and high stress levels may have a biological age several years older than their actual age.
Conversely, someone who exercises regularly, eats a balanced diet and has good cardiovascular health may have a younger biological age. The goal isn’t simply to live longer, but to remain healthier, more active and independent for as many years as possible.
Can you improve your biological age?
Unlike chronological age, biological age is not necessarily fixed. Positive lifestyle changes may improve many of the factors used to assess healthy ageing.
These can include:
- Regular physical activity
- Nutritious, balanced eating habits
- Prioritising quality sleep
- Managing stress effectively
- Maintaining a healthy weight
- Avoiding smoking
- Limiting alcohol intake
- Addressing underlying hormone or metabolic concerns where appropriate
Small, sustainable improvements often have a cumulative effect over time.
How can longevity testing help?
Preventative health assessments can provide valuable insight into the factors influencing your overall wellbeing.
Comprehensive longevity testing may include blood biomarkers, metabolic markers, cardiovascular risk factors, hormone analysis, gut testing and other indicators that help build a personalised picture of your health.
Rather than relying on symptoms alone, these assessments can highlight opportunities to optimise your health before problems become more significant.
Whether you’re interested in improving energy levels, reducing future health risks or taking a proactive approach to wellbeing, personalised preventative health testing can provide the information needed to make confident choices about your wellbeing.