But obesity rates in Europe are still steadily climbing, despite food scarcity not being a widespread issue for decades and food quality increasing in the 21st century. Sure we’re behind America, but it’s not getting any better; we’re seeing the same kind of linear increase in obesity cases, on both sides of the former Iron Curtain (and obesity was already growing in many communist countries where access to cars was… elusive at best before the fall of the Wall):
The essay I linked talks about The Australian Paradox where “obesity in Australia nearly tripled between 1980-2003, while sugar consumption dropped 23%”.
It’s not as simple as “our food is better” or “they have more cars”. Yes it’s better (significantly so), and we aren’t as car dependent as Americans (though it’s still very bad here outside of historical city centers), but the correlation with obesity in particular is more elusive to find than you’re implying since things have also been steadily getting worse on this side of the Atlantic.
I would highly recommend reading the article I linked, it goes to great lengths to thoroughly debunk common myths like this about the causes of obesity.