The aging population implies important changes at various levels. From the ancient years to the 19 thcentury, human life expectancy doubled from 20 years to 40 years. However, this life expectancy doubled fast to 80 years from the 19 thcentury to the 20 thcentury and continuously increased in the 21 stcentury. 1 This fact implies important socioeconomic and health challenges. Aging entails a greater need to care for aspects related to primary aging (physical changes due to aging) and to secondary aging (ailments with risks increase in old age).
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Tania Estapé (2017) studied this question.
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