Basophils (Absolute) is a biomarker commonly used in longevity research to assess overall health and predict aging-related diseases. Basophils are a type of white blood cell that play a key role in the immune response and inflammation regulation. Elevated levels of basophils can indicate chronic inflammation, a known contributor to age-related decline and disease. Monitoring basophil levels can provide valuable insights into an individual’s immune function and overall health, helping to identify potential risks and guide personalized longevity strategies. By understanding and leveraging biomarkers like basophils, researchers and healthcare practitioners can optimize interventions to support healthy aging and extend lifespan.