> Why are so many people so unhealthy?

Because being unhealthy is the natural state of things, and keeping a handle on that fact, at scale, is difficult and complicated. We used to do a much worse job of it, though. Humans living in developed economies where everyone eats all these oft-maligned foods live much longer than their ancestors did a few centuries ago. And those who live into old age tend to remain healthier longer than those who did a few centuries ago.

That's to say that there isn't room for improvement, or that there aren't things in our food supply that don't belong there. But a sense of perspective is important. "Is this food coloring increasing people's lifetime risk of a specific cancer from 0.005% to 0.01%?" is still a pretty tidy improvement over, "Ugh, yet another outbreak of ergotism. Well, why don't we try burning witches to see if that puts it to a stop."

I think being healthy is far more natural than you say.

Go look at how native or indigenous people live vs people in cities.

One of the things they have that people in developed economies generally don't is a 50% infant mortality rate.

The ones that don't achieve it through access to very unnatural artifacts such as vaccines that are quite likely to have been made using ultramodern technologies such as genetic modification.

Or, I've got quite a few friends who have various congenital conditions that mean that they absolutely would not have survived in a society with a more "natural" foodway. With the modern food supply chain, though, they're doing just fine. Unnatural things you get in some ultraprocessed foods, such as vitamin fortification, mean they can even do it without having to worry about developing comorbid chronic ailments due to malnutrition.

That is a survival bias. Ironically if you want signs of good health practice look for unhealthy people - it means that they can survive vs the unhealthy just dying.

A really good example of this was the paper that kicked off the whole "omega-3 fatty acids for heart health" thing. It ultimately got retracted.

The gist of the paper was that they observed that Inuit communities have really low rates of heart disease, and hypothesized that it could be because their traditional diet is very high in omega-3 fatty acids. The problem is, they don't actually have low rates of heart disease. They just have low rates of heart disease diagnosis, because they also have limited access to health care.

This is somewhat survivor bias though, because all the dead that didn’t survive their youth are actually dead.

In wealthy countries these would-be-dead people walk amongst us.

Little s Science can’t get “corrupted” because it is just a tool. When the scientific method is used to determine what people prefer to buy based on one second of looking at the product, that is arguably an immoral use of the scientific method especially if the health of the users is not taken into account.

That’s also to say that “trust the science“ can be a dangerous way to shut down discussion when people are actually grasping for words to understand whether a scientific method is being improperly used.

Are people so unhealthy? Life expectancies continue to rise. The "a majority of americans have a chronic health problem" stats include things like back pain. It turns out that if you live a long time you get chronic health problems.

> Why are so many people so unhealthy? Could it be the food we are consuming?

There's no doubt about this. High sugar, low fiber is the biggest culprit.

There's doubt about this. While high sugar and low fiber is problematic, sheer quantity might be a bigger culprit. And some indigenous populations seem to remain relatively healthy on low-fiber diets (i.e. eating mostly animal products).