Busan Is Aging Faster—Not Because People Live Longer | Busan news | Breeze in Busan More than four-fifths of Busan’s population loss over six months came from residents aged 20 to 39, compressing years of demographic change into a single reporting cycle.

Busan is aging faster not because people live longer, but because working-age residents are leaving. In just six months, youth out-migration altered age structure more than years of gradual aging.
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