Americans are dying younger. 5 science-based tips could reverse the trend.

After more than a century of steady, upward climb, US life expectancy hit 78.9 years in 2015. Since then, it’s been mostly downhill. US life expectancy slid to 76.1 years in 2021 at the pandemic’s nadir before inching back up to 78.4 years in 2023 — still well below the 2014 peak and lagging most peer nations.

So where’s the good news? Science is figuring out ways to pump those numbers up again and pointing the way toward living more years — and more healthy years. And this doesn’t require sci-fi...