I can highly recommend the book Ultra-processed People by Chris van Tulleken about what UPF does (and doesn't) do with our bodies. And if you don't want to read

I can highly recommend the book Ultra-processed People by Chris van Tulleken about what UPF does (and doesn't) do with our bodies. And if you don't want to read the book, here's a ~1h video https://www.youtube.com/watch?v=5QOTBreQaIk https://www.youtube.com/watch?v=5QOTBreQaIk talking about UPF. You don't even need to watch it, just listening is enough to make you think twice about buying many different kinds of food.