The World Today
Starting at age 40, the body begins to show physiological changes that affect energy, metabolism, and cardiovascular health. blood tests are the most reliable way to detect internal disturbances before visible symptoms appear.
Experts agree that, although multiple modern monitoring methods exist, blood tests remain the cornerstone of preventative health care. According to personal trainer Matt Roberts, quoted by The Telegraph , "These checks are essential to understand your body's true condition and to make timely decisions."
1. Cholesterol: essential balance for the heart
Cholesterol is key to cardiovascular health and is divided into HDL (good) and LDL (bad). Maintaining a proper balance reduces the risk of atherosclerosis, heart attacks, and arterial blockages.
The NHS recommends HDL levels should be above 1.0 mmol/L for men and 1.2 mmol/L for women, while LDL should be kept below 3.0 mmol/L. The WHO advises that total cholesterol should not exceed 5.0 mmol/L and non-HDL cholesterol should be kept below 4.0 mmol/L.
After age 40, the ability to eliminate LDL cholesterol decreases. Therefore, monitoring it through regular testing, along with regular exercise and a diet rich in fiber and healthy fats, such as nuts and oily fish, is essential.
2. Thyroid function: key to metabolism and energy
The thyroid regulates metabolism, heart rate, and body temperature. Testing T3 and T4 levels can identify problems that can cause fatigue, weight gain, or cholesterol levels.
Hypothyroidism affects approximately 10% of the adult population, with a higher incidence in women over 60. Early detection allows for dietary adjustments, improved sleep habits, and the prevention of serious metabolic complications.
3. Testosterone: important for men and women
Starting in your 30s and 40s, testosterone levels naturally decline in both sexes. This decline impacts cardiovascular health, body composition, and emotional well-being.
Knowing your blood levels through blood tests allows you to make informed decisions about treatments or lifestyle adjustments. For men, a blood test between 10 and 25 nmol/L is considered optimal, while bothersome symptoms often appear if they fall below 15 nmol/L. Blood levels should always be measured under medical supervision.
4. Vitamin D: prevention and general well-being
Vitamin D deficiency is common even in areas with good sunlight. It is estimated that around 35% of the adult population has insufficient levels.
This vitamin not only protects bone health but also contributes to cognitive function and may reduce the risk of chronic diseases. Monitoring blood tests is essential for proper supplementation and the prevention of complications such as osteomalacia, bone loss, or muscle weakness.
The recommended intake is 600 IU for people aged 1 to 70 years and 800 IU for those over 70, adjusting laboratory results
Blood pressure: a complementary indicator
Although it's not a blood test, blood pressure is essential for predicting cardiovascular risks. Three out of ten adults in Argentina live with hypertension without knowing it. Maintaining it around 120/80 mmHg helps prevent heart attacks and strokes.
Controlling it is simple: reduce salt, engage in moderate physical activity, and limit alcohol. Regular monitoring allows for timely action and long-term protection for your health.
In addition to standard checkups, many specialists recommend supplementing blood tests with liver and kidney function tests. These organs are essential for processing nutrients and eliminating toxins, and their efficiency often declines with age. Detecting liver or kidney abnormalities early allows for adjusting diet and hydration, and, if necessary, starting preventative treatments before major complications arise. In any case, the key is to conduct regular follow-up and not wait for symptoms to appear, as silent problems often progress without giving clear signs.
