Those choices are pretty hard - modern junk food has been engineered to reinforce unhealthy consumption, the US (mostly) dictates international laws around junk food restriction[1] and it's exporting the terrible free-market approach to food choice. Some of these junk foods should be heavily taxed or just outright illegal.

1. Here's coke being terrible https://www.marketwatch.com/story/coca-cola-fought-regulatio... and there are some other wonderful examples around tobacco use in south east asia.