That's pretty broad. Some of those things might be harmful, some might not be. I doubt extruding dough, cooking ("chemically modifying") it and wrapping it in p

That's pretty broad. Some of those things might be harmful, some might not be. I doubt extruding dough, cooking ("chemically modifying") it and wrapping it in plastic makes it any worse for you, for example. Whereas on the other side of the spectrum, there may indeed be food additives or chemical treatment process that _do_ make things worse. Maybe it's not helpful to paint things with such a broad brush, and we should instead focus on specific substances or practices which might be causing problems?