Regular blood draws and blood tests are one of the best ways to monitor your overall health and lower your overall risk for death and chronic disease.
Blood tests can help detect metabolic abnormalities that increase your risk for heart disease (e.g., elevated cholesterol or triglycerides) or stroke (e.g., blood pressure), and can be an early warning sign of many cancers (e.g., low white blood cell count).
In addition, blood tests can help identify nutrient deficiencies or insufficiencies that can affect quality of life or put you at risk for disease. Blood tests can indicate whether your intake of various nutrients, such as iron, vitamin D, or the B-complex of vitamins, needs to be increased.
Subsequent blood tests can confirm this.