Nettles. Bancha Twig Tea

[beforewisdom]

Going around the internet I have seen claims that Bancha Twig Tea and infusions of Nettles have calcium.

None of these writings mention how much, who measured it or how absorbable the calcium is.

I'm guessing that neither of these things is a dependable source of calcium. Does anyone know otherwise?

[Gelert]

The other thing nettles have is oxalic acid (i.e. the stingy compound) which chelates metal cations like its going out of fashion. You end up with calcium oxalate when they react, or the stuff in kidney stones. Think on about the absorption kinetics of them!

[beforewisdom]

The other thing nettles have is oxalic acid (i.e. the stingy compound) which chelates metal cations like its going out of fashion. You end up with calcium oxalate when they react, or the stuff in kidney stones. Think on about the absorption kinetics of them!

Drat, large amounts of oxalic acid is what makes spinach so useless as a calcium source. If I may ask, how do you know nettles have oxalic acid? At least via google I haven't been able to find any measurements about anything from a reliable source.

[DB]

I only come up with histamine or formic acid as the stinging compound. No mention of oxalic acid that I can find. Lots of chlorophyll, though.