Glucose, a simple sugar used as an energy source in the body, is a crucial biomarker in longevity research. Elevated levels of fasting glucose have been linked to a higher risk of age-related diseases such as cardiovascular disease, diabetes, and cognitive decline. Monitoring glucose levels can provide valuable insights into an individual’s metabolism and overall health. Longevity experts utilize glucose as a key biomarker to assess an individual’s risk of age-related diseases and mortality. By maintaining healthy glucose levels through diet, exercise, and lifestyle modifications, individuals can potentially extend their lifespan and improve their overall healthspan.