Longevity means living a longer life while staying healthy in both your body and mind. To better understand longevity, it is helpful to first learn about two important terms: lifespan and healthspan.
Lifespan refers to the total number of years a person lives. In the past, many efforts in medicine focused on increasing lifespan. Living longer was considered an important achievement. However, a longer life does not always mean a healthier life. Some people may live many years with diseases, pain, or difficulties in daily activities.
This is why healthspan is also important. Healthspan refers to the number of years a person lives in good health. It means staying active, having energy, and being able to live independently.
Longevity medicine focuses on improving both lifespan and healthspan. The goal is not only to help people live longer, but also to help them stay healthy and enjoy a better quality of life.
To understand longevity better, we also need to know how it is measured. Measuring longevity helps scientists and doctors understand how people age and what factors can improve healthy aging.
These measurements are important because they show the difference between simply living longer and living better. They help researchers find ways to prevent disease, maintain health, and support a more active life in older age. In this way, measuring longevity helps us focus not only on adding more years to life, but also on adding more healthy and meaningful years.
How Is Longevity Measurement Done?
Longevity measurement is done by using different tests that examine the body from different angles. Basically, there is no single test that can fully measure longevity. Instead, different methods are combined to create a more complete picture of a person’s health. These methods can be divided into four main categories.
1. Blood & Biomarkers Tests
2.Genetic & Epigenetic Testing
3. Wearable and Continuous Health Monitoring Tests
4. Physiological and Functional Measurement Tests
Together, these four categories support longevity measurement by showing how the body is aging and helping identify ways to improve health and prevent disease.
Blood and Biomarkers Tests & Longevity Measurement
Blood tests are an important part of longevity measurement. They help us understand the condition of the body by measuring different substances in the blood, such as proteins, hormones, glucose, vitamins, and minerals.
These blood markers can help detect diseases early, measure health risks, and monitor changes in the body over time. They are also useful because they are simple and minimally invasive.
Different blood tests provide information about different areas of health. For example, a complete blood count (CBC) checks blood cells and can help identify conditions such as anaemia and leukaemia. A glucose test measures blood sugar levels and helps detect diabetes. A lipid panel checks cholesterol levels and can show the risk of heart disease.
Other tests examine organ health. Liver function tests can detect liver problems, while kidney function tests can show possible kidney damage. Thyroid tests measure thyroid hormones and can identify thyroid disorders.
Blood tests can also measure C-reactive protein (CRP), which may show inflammation, infections, or other health problems. Measuring minerals and vitamins, such as iron, zinc, vitamin D, and vitamin B12, helps identify nutritional deficiencies.
Researchers are also studying blood biomarkers related to aging diseases, including Alzheimer’s disease. Some markers, such as amyloid and other proteins, may help detect early changes linked to the disease. However, these tests are still being researched and are not yet widely used in routine healthcare.
Overall, hematologic biomarkers provide important information about health, disease risk, and aging. By combining different blood tests, longevity measurement can give a clearer picture of a person’s biological health and support early prevention.
Genetic and Epigenetic Testing & Longevity Measurement
Genetic tests examine a person’s DNA. They can identify genetic changes that may increase the risk of certain diseases. They can also provide information about inherited conditions, how the body responds to medicines, and how it uses certain nutrients.
This information can help people make better health decisions. For example, knowing about a higher disease risk may encourage changes in lifestyle, diet, or preventive care.
Epigenetic tests look at changes that affect how genes work without changing the DNA itself. These changes can happen because of aging, lifestyle, and environmental factors.
Epigenetic tests look at changes that affect how genes work without changing the DNA itself. One example is DNA methylation, which works like an on/off switch for genes. It changes gene activity but does not change the DNA code. DNA methylation is affected by aging, lifestyle, and the environment. Scientists use these changes to estimate biological age, and they may also help identify diseases such as cancer.
Together, genetic and epigenetic tests help identify health risks, support early prevention, and guide more personalized treatments. They are becoming important tools for understanding how a person ages and how to support a longer, healthier life.
Wearable and Continuous Health Monitoring Tests
Wearable health devices collect health data throughout the day without interrupting daily life.
Common examples include smartwatches, fitness trackers, smart rings, and continuous glucose monitors (CGMs). These devices can measure heart rate, blood pressure, sleep quality, body temperature, physical activity, and blood sugar levels.
One of their biggest advantages is that they collect data continuously. This means they can detect small changes in health before symptoms appear. For example, a smartwatch may detect an irregular heartbeat, or a glucose monitor may show changes in blood sugar levels.
The information from wearable devices can also help doctors and other healthcare professionals. They can see how a person’s health changes over time instead of relying on a single clinic visit.
Wearable devices also support more personalized healthcare. They show how the body responds to exercise, diet, medication, and other lifestyle changes. This helps people and their healthcare providers make better decisions to support healthy aging and improve longevity measurement.
Physiological and Functional Measurement Tests
Physical and body function tests measure different areas of health, including body composition, cardiovascular health, muscle function, and flexibility.
Body composition looks at body weight, height, waist size, and body fat. Doctors may use methods such as Body Mass Index (BMI), bioelectrical impedance analysis (BIA), or body scans to estimate body fat and muscle mass. These measurements help understand a person’s overall physical condition.
Cardiovascular health is another important area of physiological testing. These tests measure how well the heart and blood vessels work and how efficiently the body receives oxygen. Heart and lung fitness can be assessed using a treadmill test, a stationary bike test, or a VO₂ max test.
Other tools can also assess vascular health. For example, an Arteriograph measures the condition of the arteries by assessing arterial stiffness, pulse wave velocity, and central blood pressure. These measurements provide information about cardiovascular aging and may help identify early changes in blood vessel health.
Physical tests also measure muscle strength and muscle endurance. Simple exercises, such as push-ups, sit-ups, grip strength tests, and balance tests, can show how strong the muscles are and how long they can continue working.
Flexibility is another indicator of physical health. Tests such as the sit-and-reach test, shoulder flexibility test, and trunk lift test measure how well the joints and muscles can move.
Together, these tests give healthcare professionals a better understanding of a person’s overall fitness, body function, and biological aging. When combined with blood tests, genetic testing, and wearable devices, they make longevity measurement more complete and help create personalized strategies for healthy aging.
The Complete Picture of Longevity Measurement
| Category | Main Tests / Examples | What They Measure | Why They Matter for Longevity |
|---|---|---|---|
| 1. Hematologic Biomarkers (Blood Tests) | Complete Blood Count (CBC), glucose test, HbA1c, lipid panel (LDL, HDL, triglycerides), liver function tests, kidney function tests, thyroid tests, C-reactive protein (CRP), vitamin and mineral levels, Alzheimer’s-related blood markers | Blood cells, glucose control, cholesterol, inflammation, organ function, hormones, and nutritional status | Blood biomarkers provide information about overall health, disease risk, inflammation, and early signs of health problems. They are an important part of longevity measurement because they help identify risks before symptoms appear. |
| 2. Genetic and Epigenetic Tests | Genetic testing, DNA analysis, epigenetic testing, DNA methylation analysis (biological age tests) | Genetic risks, inherited conditions, gene activity changes, and biological aging | These tests help understand disease susceptibility and how quickly a person may be aging biologically. They support personalized prevention and health strategies. |
| 3. Wearable Health Technologies | Smartwatches, fitness trackers, smart rings, continuous glucose monitors (CGMs), health monitoring devices | Heart rate, activity levels, sleep quality, blood pressure, body temperature, glucose levels | Wearables provide continuous health information in daily life. They can detect changes early and show how lifestyle changes, exercise, or treatments affect the body. |
| 4. Physiological and Functional Health Tests | ⭐ Arteriograph (Longevity Must-Have), VO₂ max test, treadmill test, body composition analysis (BMI, BIA), blood pressure measurement, muscle strength tests (grip strength, push-ups), muscle endurance tests, balance tests, flexibility tests | Cardiovascular health, arterial stiffness, heart and lung function, body composition, muscle strength, mobility, and physical performance | These tests show how well the body functions. They are important for assessing physical aging, cardiovascular health, and maintaining independence throughout life. |
This article mainly summarizes the key points from the article “Climbing the Longevity Pyramid: Overview of Evidence-Driven Healthcare Prevention Strategies for Human Longevity”, with additional notes and explanations added by the author to provide a clearer understanding of longevity measurement and healthy aging strategies.