u/Defiant-Mouse6543

I have heard and read more than once in comments and other social media that food in the US is somehow "different" than food in, for example, Europe. Often stated like when someone moves from Europe to the US they gain a bunch of weight or get less healthy eating the same things, or the reverse from the US to Europe.

I understand some things, like processed foods, may contain more sugar, salt, or other ingredients, but is a tomato all that different in the US to France or Italy? I understand their may be differences because of soil, growing techniques, etc., but is a produce or unprocessed grains or something somehow worse for you in the US?