[witten]

What about the high level of oxalates in spinach, the over-consumption of which can result in kidney stones[1]?

[1] https://nutritionfacts.org/video/oxalates-in-spinach-and-kid...

[sohamsankaran]

There is a fair amount of debate about this, with a number of high-quality studies such as (https://jasn.asnjournals.org/content/18/7/2198) coming to the conclusion that the additional risk is minimal even with low calcium consumption.