"Polish diet" is basically growth hormone-boosted pork meat, potatoes and some beets or sauerkraut on the side, followed by sugar and flavoring diluted in saturated fat as a dessert. Sweets sold in our stores have different ingredients than the same brands sold in Germany, Austria or Sweden. We breathe coal smoke all winter (I literally moved to seaside for better air; ~35 AQI at the time of writing this) to heat ourselves and export electricity to Germany.
We eat shitton of salt because apart from coal mines, we also have salt mines and government propaganda is that MSG is unhealthy. You can see products marketed as "ZERO GLUTAMATES" on store shelves, and a quick look at nutrients table, shows tons of sodium. Most restaurants oversalt to get you to buy more drinks. To add, Polish people smoke cheap cigatrettes like chimneys. I remember ashtrays even on pharmacies' counters in the 80s - it was unthinkable to extinguish your lit tabacco when entering the pharmacy.
That said, we still have much lower (lower==better) Air Quality Index, usually tens to hundreds times lower than India, and Indian food isn't healthy, too. I'm not sure if the data coming from particular countries is reliable.