I disagree on this point all though I think the term is vague.
If I grill a steak and then chop it up into pieces i have "processed" it. This isn't what anyone is talking about when they say processed foods though.
If I chop up several different types of meat, add several different colorants, fillers, perservatives and whatever else, turn it all into a slurry and then reconsistute it into a spam loaf, I think there are a lot of good reasons to believe this is ineherently unhealthy, the most simple being that its really easy to dump in a bunch of sugar and extra fats.
If I grill a steak and then chop it up into pieces i have "processed" it. This isn't what anyone is talking about when they say processed foods though.
If I chop up several different types of meat, add several different colorants, fillers, perservatives and whatever else, turn it all into a slurry and then reconsistute it into a spam loaf, I think there are a lot of good reasons to believe this is ineherently unhealthy, the most simple being that its really easy to dump in a bunch of sugar and extra fats.