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Below, we go through different markers that are important to track for anyone who wants to understand their biological age and strengthen their long-term health mechanisms.
Heart and blood vessels – energy and longevity
Markers such as cholesterol, blood lipids, and blood sugar show how efficiently your body manages both energy and fat. Maintaining a good balance is essential for preventing cardiovascular diseases, which remain the most common cause of premature aging.
Cholesterol and other blood lipids affect the elasticity of the blood vessels and the degree of low-grade inflammation in the body, while glucose and HbA1c reveal how well the body regulates blood sugar over time. Stable blood sugar and balanced blood lipids reduce the risk of atherosclerosis and contribute to slower cellular aging.
Inflammation and immune system – the body’s internal defense
Chronic low-grade inflammation is one of the strongest drivers behind biological aging.
CRP (C-reactive protein) is a sensitive marker that can help reveal hidden inflammatory processes in the body, while white blood cells and lymphocytes reflect how active the immune system is. By keeping these values balanced, you can prevent damage to tissues, vessels, and cells – and thereby protect your body from premature breakdown.
Liver and kidneys – the body’s detoxification system
The body’s ability to break down and eliminate waste products, medications, and toxins relies heavily on the liver and kidneys. When these organs function optimally, the body’s internal environment remains clean, which in turn supports both hormonal balance and cellular renewal.
Liver function is measured through enzymes such as ALAT, ASAT, ALP, and GT, while kidney function is assessed via creatinine and eGFR. These values provide a clear picture of the body’s capacity to handle strain and recover effectively.
Hormonal balance – rhythm, energy, and metabolism
The hormonal system regulates everything from metabolism and energy to stress and recovery. When balance is disrupted, nearly every aspect of health is affected.
It’s therefore important to look at thyroid hormones T3, T4, and TSH, which indicate how efficiently the body produces energy at the cellular level – and cortisol, which reflects stress levels and circadian rhythm. Elevated or chronically low cortisol levels, as well as reduced thyroid function, can accelerate mitochondrial breakdown and thus the aging process.
Nutritional status – the body’s building blocks
For our cells to repair themselves, protect against oxidative stress, and produce energy, sufficient levels of several key nutrients are required.
In iron status, iron and ferritin are crucial for oxygen transport and energy metabolism, while vitamin D – which typically decreases during seasons with less sunlight – plays a central role in immune function, muscle health, and brain function. Albumin serves as a general marker for nutritional balance and liver function. A stable nutritional status forms the foundation for recovery, mental clarity, and long-term vitality.
Blood status – circulation and vitality
Blood values such as hemoglobin and the size of red blood cells (MCV) show how efficiently oxygen is transported to the body’s tissues. Strong blood values are linked to good energy, improved recovery, and mental clarity. It’s therefore important to monitor these factors, as they not only affect daily well-being but also how slowly the body ages at the cellular level.
The overall picture – understanding your biological age
In summary, it’s important to gain a comprehensive overview of all these markers, as they provide a holistic picture of the body’s biological condition – that is, how well it manages stress, energy, nutrition, and recovery. By tracking your values over time, you create the foundation to observe the effects of lifestyle changes and detect deviations early.
Longevity is ultimately not about living forever – but about living your best life with stable health, abundant energy, and vitality. Blood markers are your most reliable tool for understanding where you stand today and how you can influence your future health.