It's the poisoned engineered "food" that humans consume. Zero nutrition but completely mind numbing, sterilizing and cancerous.
I have read about TONS of people saying they studied in the USA for a year or two and gained a ton of weight even though they were still walking everywhere, working out, etc..
Moved back to Europe and they lost weight without changing anything.
It's in the food. There are so many people posting about this all over the place and it seems to get "lost" easily or blocked. Food in America has become/is poison.
If you want to eat "bread" in America you better be importing your flour from a trusted source in Europe where most of the chemicals allowed here are illegal.