Advancements in are changing the conversation. From telomere research to "Blue Zones" (areas where people live longest), the focus is shifting from simply living longer to increasing "healthspan" 鈥攖he years spent in good health.
Until recently, South Korea had a system where babies were one year old at birth and gained a year every New Year鈥檚 Day. 鈿栵笍 Age in the Eyes of the Law
How old your cells and organs seem based on health markers.
Age is rarely defined by a single number. Researchers typically categorize it in three ways: The number of years passed since birth.