Blood Urea Nitrogen (BUN) is a biomarker commonly used to assess kidney function and overall health. Elevated levels of BUN may indicate kidney impairment, dehydration, or high protein intake, while low levels could be a sign of liver disease or malnutrition. As a longevity expert, monitoring BUN levels can provide valuable insight into an individual’s risk for age-related diseases and overall longevity. Maintaining optimal BUN levels through a balanced diet, hydration, and regular physical activity is essential for promoting healthy aging and preventing age-related decline in kidney function. Regularly monitoring BUN levels can help individuals make informed decisions to support their longevity and well-being.