The vital substance balance refers to the availability and balance of vital nutrients in the body. Vital substances are essential nutrients such as vitamins, minerals, trace elements and other bioactive substances that are indispensable for maintaining optimal health and function of the body. A balanced level of vital substances is important for the smooth functioning of metabolic processes, the immune system, energy levels and general vitality. An unbalanced diet, unhealthy lifestyle habits or certain diseases can leadAn ECG lead is a method for recording the electrical activity of the heart. Electrodes are applied to the patient's skin to capture the electrical signals of the heart. These... to an imbalance of vital substances and thus to health problems. It is therefore important to eat a balanced and nutritious diet and to take nutritional supplements if necessary.