Awful title. It's a projection that the US will drop that far in the future. It hasn't dropped that far as the clickbait implies.

> The top determinants of average lifespan are so-called “lifestyle” diseases, according to AFP. These include high blood pressure, obesity, high blood sugar and alcohol and tobacco use.

Oddly, another article[∆] states that exercise is the top determinant in life expectancy.

"Being unfit on a treadmill or in an exercise stress test has a worse prognosis, as far as death, than being hypertensive, being diabetic or being a current smoker," Jaber told CNN. "We've never seen something as pronounced as this and as objective as this."

Should Americans revert to the highly aerobic work of manual farming?

[∆]https://news.ycombinator.com/item?id=18264436