Poland's share of adults with obesity barely moves by 2034. Chile's reaches one adult in two.

Satoria's forecast

Satoria forecast for Poland: adults living with obesity, in every 100 22.2% of adults in 2034, up from 21.8% in 2024 - could go either way. 80% range 20.7% to 23.7%.

A flat line and a climbing one.

Our central path has Poland at 22.2% of adults in 2034, less than half a point above today. Chile reaches 50% and Mexico 44.1%. The three lines never cross. What differs is the slope, and Poland's is close to level.

It counts one height and weight rule, across a whole population.

The measure is the share of adults with a body mass index of 30 or more. The World Health Organization calls that a surrogate marker of fatness and says waist measurements help. It describes a population, so it says nothing about your body or your risk.

One country here stopped climbing, and it is not the rich one.

The World Health Organization says 1 in 8 people worldwide were living with obesity in 2022 and that adult obesity has more than doubled since 1990. Poland's own share was 21.8% of adults in 2024. Chile's was 40.5% and Mexico's 37.4%.

Where does Poland land in 2034?

Poland's share rose through the years to 2018 and has moved very little since. Chile's rose in every single year. Move the slider to where you think our model puts Poland ten years on, then see the answer.

A smooth series is easy to forecast and easy to trust too much.

These country figures are modelled estimates, which is why the lines are so smooth and why our model scores so well on them. A new national survey can move a whole history at once. Poland's own range for 2034 also allows a small fall.

Watch whether Poland's line stays level after 2028.

Our path adds about a tenth of a point a year from 2028, which is slow but not zero. Chile adds close to a full point every year. If Poland's next few readings rise faster than a tenth of a point, the flat line is over.

Three countries, three different slopes

The World Health Organization's December 2025 fact sheet puts 1 in 8 people worldwide living with obesity in 2022, with about 16% of adults obese and the share more than doubled since 1990. Almost every country is in that rise.

Poland is the odd one here. Its estimated share went from 20.3% of adults in 2009 to 21.8% in 2024, and almost all of that happened before 2018. Since then the reading has moved by less than a tenth of a point a year.

Chile and Mexico did not pause. Chile went from 27.1% of adults in 2009 to 40.5% in 2024 and Mexico reached 37.4%, each rising in every year of the frozen series.

What our model says next

Our central path puts Poland at 22.2% of adults in 2034, less than half a point above the 21.8% of 2024, with a published range from 20.7 to 23.7%.

Chile's path reaches 50% of adults in 2034, with a range from 48.6 to 51.5. Mexico's reaches 44.1%, with a range from 43.5 to 44.9. Neither range comes anywhere near Poland's.

Poland's range is the interesting one because it contains today's reading. Our own forecast allows the share to be slightly lower in 2034 than it is now, which is not something the Chilean or Mexican ranges allow.

Why this model scores so well, and why that is not the whole story

On data held out from fitting and model choice across 50 country series the errors were 94% smaller than assuming no change, and the 80% ranges held the true value in about 90 of every 100 held-out years. That is the best record of any series used in these stories.

Part of the reason is the data. These national figures are modelled estimates rather than annual surveys of everybody, so the lines are smooth and a smooth line is easier to continue. A new national survey can revise a whole history at once, and no model sees that coming.

The measure also has limits of its own. It counts adults with a body mass index of 30 or more, and the World Health Organization itself calls that index a surrogate marker of fatness, pointing to waist measurements as an extra check. None of it is a statement about any reader's own body.