life expectancy dropped what does it mean  according to the study, children born recently in regions with the oldest people are far from likely to become centenarians. at best, the researchers predict 15% of females and 5% of males in the oldest-living areas will reach 100 this century. "if you're planning for retirement, it's probably not a good idea to assume you're going to make it to 100," said jay olshansky.  "you'd probably have to work for at least 10 years longer than you'd think. and you want to enjoy the last phase of your life, you don't necessarily want to spend it working to save for time you're not going to experience."   587-024-00702-3 advances in public health and medicine sparked a longevity revolution in the 20th century. in the previous 2,000 years, life expectancy crept up, on average, one year every century or two. in the 20th century, average life expectancy rocketed, with people gaining an extra three years every decade.  for the latest study, olshansky delved into national statistics from the us and nine regions with the highest life expectancies, focusing on 1990 to 2019, before the covid pandemic struck. the data from hong kong, japan, south korea, australia, france, italy, switzerland, sweden, and spain showed that rises in life expectancy had slowed dramatically. in the us, life expectancy fell [t]he researchers describe how on average, life expectancy in the longest-living regions rose only 6.5 years between 1990 and 2019.  "in the modern era we have, through public health and medicine, manufactured decades of life that otherwise would not exist," olshansky said. "these gains must slow down. the longevity game we're playing today is different to the longevity game we played a century ago when we were saving infants and children and women of child-bearing age and the gains in life expectancy were large. now the gains are small because we're saving people in their 60s, 70s, 80s, and 90s."
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