The Blood Secret: Scientists Find Clue to Living to 100

Scientists may be closer to solving the mystery of why some people live exceptionally long lives, potentially due to innate biological differences discovered in their blood.

A landmark study published in GeroScience, one of the largest of its kind, analyzed decades of health data from 44,000 Swedes and found that individuals who lived past 90 and particularly those who reached 100 shared distinct biomarkers, including lower levels of glucose, creatinine, and uric acid.

This suggests a strong link between metabolic health, efficient kidney function, and extraordinary longevity.

While genetics likely play a foundational role, factors like nutrition also contribute, offering new insights into the complex interplay that allows centenarians—a rapidly growing demographic—to thrive into triple digits.