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Aging is a natural process which affects all living organisms, including humans.

We often measure our age based on the number of years we have lived since birth, which is known as our chronological age.

However, chronological age is not always the same as our biological age, which is a measure of how well our bodies are functioning and aging at the cellular level.

In this blog post, we will explore the differences between biological age and chronological age, and why it matters for our health and wellbeing.


What is Chronological Age?

Your chronological age is simply the number of years that have passed since your birth.

It is the most common way of your measuring age.

Chronological age is easy to measure and is usually accurate, but it does not always reflect your overall health status.


What is Biological Age?

Biological age is a measure of how well your body is functioning and aging at the cellular level.

It is often determined by analysing your biomarkers, which are measurable indicators of various physiological processes in your body. These biomarkers can include things like DNA damage, telomere length, inflammation levels and mitochondrial function, among others.

Biological age can be affected by many factors, such as genetics, lifestyle and environmental factors. For example, smoking, poor diet, lack of exercise and exposure to pollution can all accelerate your biological aging, while healthy habits like regular exercise, a balanced diet and stress management can slow it down.

Knowing your biological age can be very helpful in understanding your overall health and making lifestyle changes for your improved longevity.


Why Does Biological Age Matter?

While chronological age is a simple and easy-to-measure indicator of your aging process, it does not always reflect your overall health status or your risk of age-related diseases. In contrast, biological age provides a more accurate and comprehensive picture of your health and aging status.

Research has found that biological age, which is determined by a set of biomarkers related to aging and health, was a more accurate predictor of mortality and morbidity risk than chronological age.

Individuals with a higher biological age are more likely to experience adverse health outcomes such as death, disease and disability, even while accounting for other factors such as lifestyle, socioeconomics and genetics.

Accordingly, incorporating biological age assessments into clinical practice could help identify individuals at higher risk of age-related diseases and provide more targeted and personalised interventions.

In summary, knowing your biological age can help you make more informed decisions about your health and lifestyle choices.

If your biological age is higher than your chronological age, it may be an indication that you need to make some changes to your diet, exercise habits or other lifestyle factors to improve your overall health and reduce your risk of age-related diseases.


How Can We Measure Biological Age?

It can be measured by looking at certain biological markers such as telomeres, epigenetic marks and biomarkers.

DNA Methylation Analysis

This method involves analysing the pattern of DNA methylation (a chemical modification of DNA) in your cells to determine your biological age.

Telomere Length Analysis

Telomeres are the protective caps on the ends of your chromosomes, and their length can be an indicator of your biological age.

Shorter telomeres have been associated with a higher risk of age-related diseases.

Blood Biomarker Analysis

Blood tests can be used to analyse various biomarkers, such as inflammation levels or mitochondrial function, which can provide insights into your biological age.

While blood tests can be used to assess your mitochondrial function, the specific tests used may vary depending on the context and purpose of the assessment. It’s important to consult your doctor to determine the most appropriate tests for your condition.


Can I Slow Down My Aging, Biologically?

Oh yes! You can indeed do a few things to improve/reverse your biological age and slow down aging in general.

These following tips can certainly help you.

Exercise regularly: Regular can improve your cardiovascular health, reduce inflammation and promote healthy aging. Aim for at least 150 minutes of moderate-intensity workout per week.

Maintain a healthy diet: Eating a diet that is rich in fruits, vegetables, whole grains and lean proteins can provide the nutrients your body needs to function optimally and reduce your risk of chronic diseases.

Manage stress: Chronic stress can contribute to inflammation and accelerate the aging process. Practice stress-reducing techniques, such as meditation, breathing exercises or yoga, to achieve quietude and reduce your stress levels.

Get enough sleep: Sleep deprivation can contribute to your inflammation, reduce your cognitive function and accelerate your aging process. Aim for 7-9 hours of sleep every night.

Limit alcohol and tobacco use: Both alcohol and tobacco use can contribute to chronic diseases and accelerate your aging process. Limit or avoid these as far as possible.

Consider supplements: Supplements, such as omega-3 fatty acids, vitamin D and probiotics, may help promote your healthy aging. But you must consult your doctor before taking any supplements.


Takeaway

While chronological age is a useful measure of your aging, it does not always reflect your overall health status or your risk for age-related diseases. Biological age, on the other hand, provides a more accurate and comprehensive picture of your health and aging status.

This essential knowledge will help you towards informed decisions about your health and lifestyle choices, and also help you take steps towards better prevention/management of your possible age-related diseases.


 

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Sources: PubMed Central (1, 2, 3, 4, 5, 6), Healthline, ScienceDirect.

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