To me, the most plausible reason for no processed food advice, is that it's all new. Processed food hasn't been consumed for that long, and they keep changing t

To me, the most plausible reason for no processed food advice, is that it's all new. Processed food hasn't been consumed for that long, and they keep changing the techniques, so individually, each technique didn't exist for that long. That means that you don't know if it's good, bad or neutral to your health. Given that you don't need to eat processed and can easily feed yourself on unprocessed foods, a lot of people prefer the if its not broken don't fix it approach. Now, in theory, nothing prevents a processed food from ending up being healthier then non processed, it's just people tend to believe that's the less likely gamble.