this just in to cnn, the cdc says u.s. life expectancy has dropped to its lowest level in 25 years. even with all the medical advances we ve made, why? cnn senior medical correspondent elizabeth cohen joins us now. elizabeth, break down this new report for us. reporter: ana, this report is really such sobering news, and i think everyone will understand the reasons why. so life expectancy which usually, you know, in recent decades just goes up, up, up with medical advances, with better prevention and diagnostics instead is going down, in other words, the life expectancy is lower than it had been the year before. so let s take a look at this report that just came out from the cdc. it looks at life expectancy last year in 2021. so they found that it was 76.4