Doctors read these markers together, not in isolation. The study also noted a U-shaped link for aspartate aminotransferase. Both very high and very low values are related to lower odds. That pattern tells us extremes can be risky for different reasons. Very low values can track with frailty or poor nutrition in some settings. Very high values can reflect injury. The paper did not claim exact cutoffs for clinical decisions. It compared relative positions within the cohort. Yet it makes common sense. Kidneys and liver support many systems. Therefore, sustained signs of strain in those organs would not help a person reach advanced ages. If a recent panel shows changes, ask your clinician about repeat testing, medication review, alcohol intake, and imaging when appropriate. Small improvements in habits can move enzymes toward calmer ranges over time.
Uric Acid and Inflammation
Uric acid forms when the body breaks down purines. High levels can crystallize in joints and cause gout. They can also relate to kidney stones and kidney strain. In the Swedish results, a clear dose-response appeared. The lowest uric acid quintile had almost twice the chance of reaching 100 compared with the highest quintile. The authors also wrote that this difference “might point towards inflammation” influencing who reaches 100. That is a gentle hypothesis, not a definitive claim. Uric acid links to oxidative stress and metabolic disease, so lower values may signal a calmer internal environment. Still, there are caveats. Some people have high uric acid without gout or stones. Some drugs and diets can shift values up or down.
