How does aging affect renal mass and the number of glomeruli in the kidney?

Updated: Jul 21, 2021
  • Author: Pradeep Arora, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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The biologic process of aging initiates various structural and functional changes within the kidney. [8, 9] Renal mass progressively declines with advancing age, and glomerulosclerosis leads to a decrease in renal weight. Histologic examination is notable for a decrease in glomerular number of as much as 30-50% by age 70 years. The GFR peaks during the third decade of life at approximately 120 mL/min/1.73 m2; it then undergoes an annual mean decline of approximately 1 mL/min/y/1.73 m2, reaching a mean value of 70 mL/min/1.73 m2 at age 70 years.

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