Earlier quoted context omitted.
There's 2 good documentaries I remember about the subject (though there's likely many more): That Sugar Film [1] and Fed Up [2]. [1] https://en.wikipedia.org/wiki/That_Sugar_Film [2] https://en.wikipedia.org/wiki/Fed_Up_(film)
I dont know about Fed Up, but at the very least That Suger Film is very dishonest and not good science. Unfortunately the only good source I have is in swedish, but here it is: https://traningslara.se/hur-du-gor-en-storsaljande-men-usel-...
For instance, the evidence against trans fats is seriously overwhelming and convincing. The evidence against carbohydrates? Eh, not so much.
Avoid added sugar, don't worry so much about bread (as long as you avoid the stuff with added sugar, obviously) or rice or paste or potatoes.