I haven't known my great-grandmother much, but my grandmother lives on a typical German diet of eating as many greasy potatoes and meat as you can get, and like

I haven't known my great-grandmother much, but my grandmother lives on a typical German diet of eating as many greasy potatoes and meat as you can get, and like a good grandmother, she loves cake. She is doing okay because she exercises a lot, but tbh, many people of her generation are fat and sick on the same diet - all from natural "slow food". As far as recognising it as food goes, has there ever been scientific advice in favour of processed foods? This seems like an implicit strawman to me.