Ageing is a natural process that affects everyone, but how we age can vary greatly from person to person. While we all have a chronological age based on the number of years since birth, our biological age may tell a different story about how well we are ageing. Biological age, also known as “true age,” is a measure of our overall health and can give us insights into how well our bodies are faring as we grow older.
The concept of biological age is based on the idea that our bodies undergo gradual declines in physical and mental attributes as we age. Factors such as wrinkles, grey hair, changes in posture, gait, mental acuity, and more can all contribute to how old we appear. Biological age aims to capture this decline in a single metric, providing a scientific evaluation of our overall health and well-being.
While most people’s biological age tends to be close to their chronological age, some individuals may have a biological age that is significantly different. For example, a 56-year-old person may have the biological age of a much younger individual, while another person of the same age may have the biology of someone much older. This discrepancy highlights the fact that some people age better than others.
Biological age can be a valuable tool for individuals looking to improve their health and make lifestyle changes. By understanding their biological age, individuals can assess their overall state of health and make informed decisions about diet, exercise, and other interventions. Additionally, for scientists studying anti-ageing interventions, biological age measurements can help evaluate the effectiveness of different treatments and interventions without having to wait years to see results.
Despite the potential benefits of biological age measurements, there are limitations to current methods of assessment. Various biological clocks have been developed using different markers, such as epigenetic markers, blood proteins, telomere length, urine metabolites, and more. However, these clocks may not always provide consistent results, leading to uncertainty and confusion about an individual’s true biological age.
Additionally, many ageing clocks lack accuracy and may give individuals false confidence or unnecessary anxiety about their health. However, emerging technologies such as large health models (LHMs) powered by artificial intelligence show promise in improving the accuracy of biological age assessments. These models can predict an individual’s risk of mortality and age-related diseases without the need for biological samples, offering a more comprehensive and reliable approach to measuring biological age.
In conclusion, while biological age measurements can provide valuable insights into our health and ageing process, it is essential to approach them with caution. As new technologies and approaches continue to evolve, the accuracy and reliability of biological age assessments may improve. In the meantime, it is important to take biological age results with a grain of salt and focus on maintaining a healthy lifestyle to age gracefully.
