It's a little disingenuous to suggest that the ingredients of a food are 'something that can be added to it.' If processed foods tend to be bad (which they do)

It's a little disingenuous to suggest that the ingredients of a food are 'something that can be added to it.' If processed foods tend to be bad (which they do) you can quite correctly crusade against them if you're interested in helping people not to eat bad food. Edit: Edited for clarity.