aging rate

Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.

With higher life expectancy and lower birth rate, South Korea is becoming an aging nation.

Japan's fertility rate has dropped to 1.34 children per woman, shrinking the pool of workers and consumers, and increasing the burden on younger employees to pay for an aging population.