['While many studies show a correlation between chronological age and physiological indicators, the nature of this correlation is not fully understood.', 'To perform a comprehensive analysis of the correlation between chronological age and age-related physiological indicators.', 'Physiological aging scores were deduced using principal component analysis from a large dataset of 1,227 variables measured in a cohort of 4,796 human subjects, and the correlation between the physiological aging scores and chronological age was assessed.', 'Physiological age does not progress linearly or exponentially with chronological age: a more rapid physiological change is observed around the age of 55 years, followed by a mild decline until around the age of 70 years.'] Does comprehensive Analysis of Large Sets of Age-Related Physiological Indicators reveal Rapid Aging around the Age of 55 Years?