>>21455117
Not him, but it's legit a thing. You do have to eat very large quantities for it to actually be a problem, but the possibility is real. Fun fact, if you've ever heard that rhubarb leaves are poisonous, the oxalic acid is the reason for that. It became a problem in World War 2 in Brtiain when food was in short supply and people started eating masses of it because it's so prolific. That's where the thought of them being poisonous caught on, but in moderation they're fine. Indeed, fun fact #2, spinach has more oxalic acid than rhubarb leaves.