Hi Tom,

Thomas E. Billings wrote:

> re: oxalic acid. It is my understanding that it is found in raw
> spinach and a number of related plants.
>
It is not only found in spinach, but also in rhubarb, tomatoes,
mangolds and sourdock.

There are no scientific findings based on human experiments as
far as I am aware (rather than lab experiments in test tubes) which
point to it inhibiting calcium intake.

Best regards,

Alan