Life expectancy rise in rich countries slows down: took 30 years to prove

> The decline in the United States is driven by increasing numbers of deaths because of conditions such as diabetes and heart disease in people aged roughly 40 to 60.

People are asking if we should be surprised by the headline but are missing this. As suggested in the article by the researchers, there is something dragging down the average since the 2010s. Not even hitting the general expectation of ~75 years. We don’t have solid answers yet, only theories.

So yes, generally while going up against the process of aging is going to create barriers (eg can we get to 130 years old), we are also failing to raise the baseline which is the bigger issue that people might not grasp when it comes to “life expectancy rates”.

> We don’t have solid answers yet, only theories.

The exact quote you gave had a pretty solid answer, certainly not just "theories".

I think the distinction there is between immediate cause and root cause. Heart disease and diabetes (or complications thereof) is the immediate cause of death, but what is causing an increase in those diseases is theory at this point.

Is it not clearly obesity? Why everyone is obese is perhaps unclear (although portion sizes, ultra processed foods, screen time and sedentary lives, etc, all seem to likely play a clear role), but I’d be surprised if the level of obesity that exists didn’t cause more heart disease and diabetes.