Lactate Dehydrogenase (LDH) is a biomarker used in longevity research to measure cellular health and energy metabolism. Elevated levels of LDH have been associated with tissue damage, inflammation, and chronic diseases, all of which can impact lifespan and overall health. By monitoring LDH levels, researchers can gain insights into the body’s ability to repair and adapt to stress, ultimately contributing to the understanding of aging processes and potential interventions for increasing longevity. Additionally, LDH levels can be used to assess the effectiveness of lifestyle or medical interventions aimed at promoting healthy aging. Overall, LDH provides valuable information about cellular function and overall health, making it a valuable biomarker for longevity research.