Blood tests can identify hormone imbalances and nutritional deficiencies, both of which significantly influence mental health.

Liver function tests measure enzymes, proteins, and substances to assess liver health and detect diseases.

Diet can significantly influence blood test results by altering levels of glucose, lipids, and other biomarkers.

The frequency of blood tests depends on age, health conditions, and risk factors, with general recommendations ranging from annual to more frequent testing for those with underlying health issues.