What is wrong with canned food?
Mostly veggies like canned spinach, lima beans, peas.
Nothing wrong with canned or frozen veggies.
In fact: Canned tomatoes are probably better nutritionally than most so called fresh tomatoes in a super market.
Canned tomatoes offer something that fresh can’t. Tomatoes are preserved using heat, which releases lycopene—a carotenoid that may help prevent prostate and breast cancer. And canned tomatoes are super-easy: they’re already peeled, chopped and ready to cook with!
The doc was talking about the prepackaged/cooked foods with 20 ingredients which have 15 syllables and the rest is sugar and carbs pretending to be a healthy meal because of all the enriched vitamins.