Albumin is often regarded simply as a nutritional indicator, but in reality it is an important protein that is closely associated with the maintenance of life. According to large-scale cohort analysis results published in the SCI-grade international journal Clinical Epidemiology, even a 10 g/ℓ reduction in serum albumin concentration within the normal range increased overall mortality risk by 137%. In particular, the risk of death from cardiovascular disease rose by as much as 89%.

Albumin is a key component that determines “osmotic pressure,” which draws water into blood vessels. When albumin levels decline, water in the blood vessels leaks into tissues, causing blood pressure to become unstable and placing a heavy burden on the heart. For this reason, experts describe albumin levels not as a simple blood test value, but as an indicator comparable to a “dam for sustaining life.”

Domestic research has also confirmed the importance of albumin levels. According to a study conducted by the Family Medicine Department of CHA Bundang Medical Center on people aged 60 or older, the group with blood albumin concentrations at or below 4.55 g/㎗ had a significantly higher risk of developing sarcopenia than the group with higher levels. Albumin stores and transports amino acids that serve as the raw material for muscle production; when levels drop, oxidative stress in muscle cells increases and the rate of muscle breakdown exceeds the rate of muscle synthesis. Sarcopenia is a major cause of falls and fractures in old age and is known to raise mortality by three to five times, so albumin management is regarded as an important condition for health in later life.

Albumin also plays a role in adsorbing toxins in the body and suppressing chronic inflammation. According to a study published in the SCI-grade journal Basic & Clinical Pharmacology & Toxicology, lower albumin levels were associated with higher levels of CRP, an inflammatory marker in the body, and with weakened immune function. For these reasons, in actual clinical practice, albumin levels are used as an important prognostic indicator when assessing the recovery potential of cancer patients or critically ill patients. Higher albumin levels are reported to be associated with greater tolerance to anticancer treatment and a lower risk of complications.

The challenge is that albumin is synthesized only in the liver. Among middle-aged and older adults, whose liver function is more likely to deteriorate, blood albumin levels may not easily increase even with sufficient intake of protein foods, because the liver’s ability to convert protein into albumin is reduced.

Therefore, both intake method and absorption rate need to be considered for albumin management. In general, tablet or powder forms require time to be broken down in the body, whereas liquid types are absorbed more quickly and place a relatively lower burden on digestion. They can be used as an efficient supplementation method, particularly for older adults with weakened gastrointestinal function or for patients with reduced physical strength. Experts emphasize that, rather than attempting to replenish albumin only after levels have fallen sharply, it is important to manage it consistently by regularly consuming ingredients with high absorption rates.

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