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> oxalic acid is just not good for you even small quantities. We’ve managed to get oxalic acid out of everything we’ve domesticated

Doesn't sound right. WP has this table: https://en.wikipedia.org/wiki/Oxalic_acid#Content_in_food_it.... I see a lot of commonly eaten foods with at least a small amount of it.

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By not good for you I don’t mean it will have immediate effects but you will have to deal with kidney stones down the line.

"deal with kidney stones down the line" isn't compatible with "not good for you even small quantities"

Some of those vegetables are staples in vegetarian cuisines like here in India. There would have to be a huge epidemic of kidney stones if the latter claim was true.

Cooking greatly reduces oxalate content. In Indian cuisine, greens are generally cooked, not served raw.

Also it seems there is a huge oxalate absorption difference from person to person. Some people may not be affected at all.

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