MCH is a biomarker used in longevity research to assess the health and function of red blood cells. Mean Corpuscular Hemoglobin measures the average amount of hemoglobin in red blood cells, which is essential for oxygen transport in the body. Maintaining optimal levels of MCH is important for overall health and longevity, as it indicates proper oxygenation of tissues and organs. Abnormal MCH levels may indicate underlying health issues that could impact longevity. Therefore, monitoring MCH levels can provide valuable insight into an individual’s risk for age-related diseases and overall lifespan. It is an important biomarker to consider in longevity assessments.