When you finish a health check-up and receive the results, the sheet is filled with numbers and English abbreviations. Even if there is a mark indicating 'normal', it can be complicated to think about whether everything is really okay, or if an item slightly exceeding the standard means you need to go to the hospital immediately. The blood tests conducted during the check-up are important indicators that show the condition inside the body relatively quickly and objectively, but if you don't know their meaning, they can easily look like just a list of numbers. Among the numerous items, there are 7 key values that must be checked, as they play a crucial role in predicting not only your current health status but also the risk of future diseases.
Fasting Blood Sugar, The Fork in the Road to Diabetes
Fasting blood sugar is considered the first item to check in the test results. Just because a value slightly exceeds the normal range doesn't immediately indicate a disease, but if similar values are repeated, it is necessary to consider the possibility of being in a 'prediabetic stage'. At this stage, symptoms like thirst or fatigue are almost non-existent, making it difficult to notice any abnormalities. However, depending on eating habits, weight, and exercise, the direction of future blood sugar management can change significantly. Especially if there is a family history or recent weight gain, it is important to compare changes with previous test results.
Glycated Hemoglobin (HbA1c), The Blood Sugar Flow of Recent Months
While fasting blood sugar shows the state of the day of the test, glycated hemoglobin reflects the average blood sugar level over the past 2-3 months. It helps distinguish whether the fasting blood sugar was elevated due to temporary stress or lack of sleep, or if overall blood sugar management has not been effective. If fasting blood sugar is normal but glycated hemoglobin is high, it is likely that there have been frequent fluctuations in post-meal blood sugar. Conversely, if only fasting blood sugar is high and glycated hemoglobin is normal, it could be a temporary condition issue. Looking at both values together is key to understanding blood sugar status.
Total Cholesterol·LDL, The Basic Indicator of Vascular Health
Cholesterol levels are the most commonly used indicators when assessing cardiovascular health. Just because total cholesterol levels are within the normal range doesn't mean you can relax. If LDL cholesterol, known as 'bad cholesterol', is high, the risk of fat accumulating in the blood vessel walls increases. Conversely, it is also important to check if HDL cholesterol is sufficient. Rather than judging based on a single value, looking at the overall balance and changes compared to previous results helps maintain vascular health.
Triglycerides, Reflecting Eating Habits Honestly
Triglycerides are the item that most honestly reflects recent eating habits and activity levels. The more carbohydrates or sugars consumed and the less exercise done, the higher the levels tend to rise. Especially if there are frequent late-night snacks or drinking habits, the response is more sensitive. If triglycerides appear high along with fasting blood sugar or cholesterol levels, it is necessary to check overall metabolic health. Fortunately, triglycerides can often improve relatively quickly with dietary adjustments and weight management, making it a value where the effects of management can be easily felt.
Liver Enzymes (AST·ALT), Reflecting 'Lifestyle Patterns' More Than Alcohol
When liver enzymes are high in a check-up, it is easy to first think of alcohol. However, in reality, lifestyle factors such as obesity, fatty liver, medication use, and lack of sleep also significantly affect liver enzyme levels. Just because AST and ALT are slightly above the standard does not immediately indicate a serious disease. However, if this condition is repeated, it should be understood as a signal that the liver is under continuous stress. It is advisable to take this as an opportunity to reflect on how current lifestyle patterns are affecting liver health.
Creatinine·eGFR, Quietly Progressing Kidney Status
The key values to check when evaluating kidney function are creatinine and eGFR. The kidneys often show no symptoms even when damage is progressing, so changes are often only noticed through test results. Even if the values are outside the standard, it is easy to become complacent if there are no immediate discomforts, but those with high blood pressure or diabetes need to be particularly cautious. Even small changes should be monitored consistently, as this plays an important role in maintaining kidney health.
Inflammation Level (CRP), A Quiet Warning From Within
CRP is a representative indicator reflecting the inflammatory state in the body. It can be elevated not only during infections but also in chronic inflammatory states. This is related to the risk of cardiovascular diseases and metabolic disorders, so it cannot be taken lightly. If it repeatedly appears high without any specific symptoms, it is necessary to identify the causes, including lifestyle improvements such as stress, lack of sleep, and lack of exercise, as well as chronic inflammatory diseases. The CRP level is more like a warning signal that the body quietly sends.
