Historically, a lot of walking and eating home-cooked meals that were high in veggies and fermented foods and probably eating lots of seafood and seaweed with other proteins being less frequent.

Milk wasn't even a part of school lunches until after the war, so people still kicking from the pre-war times mostly grew up without it.

I suspect, though, that life expediencies here are going to drop. Lots of fried food and such these days and I see more and more obese people.