These toxins in our food almost certainly shouldn’t be there
bbc.com
bbc.com
From Wikipedia: A toxin (from Ancient Greek: τοξικόν toxikon) is a poisonous substance produced within living cells or organisms;[1][2] synthetic toxicants created by artificial processes are thus excluded.
In other words a toxin is a poison (not a generically harmful substance) produced by living organisms for attack or defense.
New phrase learned
Organic is meaningful in context of info like this.
Also they're not quite sure about it, but almost!
Formaldehyde in most living things, cyanide in apples, etc.
Some substances should not be in our food at all, such as mercury. Other substances shouldn't be in our food above certain quantities, such as formaldehyde.
So yes, there are some "toxins" that should be in our food assuming what we are eating isn't synthesised from scratch.