Retirement—the practice of leaving ones job and ceasing to work elsewhere—has been around since the 18th century, when life expectancy hovered between ages 30 and 40. #ut that number has doubled since the early 1800s. Today, life expectancyin most industrialized countries is mofe than 75 years.The good nev^s is that we will live longer. The bad news is that because we live longer, we're more vulnerable to age-related diseases such as coronary artery disease, certain cancers, diabetes and dementia.
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