The distribution of eGFR by age in a community-based healthy population: the Japan specific health checkups study (J-SHC study).

Renal function slowly declined with age in a healthy population; however, it was relatively preserved until the mid 70 s. This result suggests that a decline in renal function often observed in the elderly does not attribute to aging alone, and further examination might be required to clarify the cause of renal impairment.