True or False: Customers like to know your information source. Also I particularly liked In 1948 you could buy spinach that had 158 milligrams of iron per hundred grams. By 1965, the maximum had dropped to 27 milligrams. In 1973 it was averaging 2.2. which I think you'll find is down to some fairly well known scientific gaffs/ changes in thinking.

Oxalic Acid, present in Spinach, stops around 90% of the available iron from being absorbed.

Try wiki/Spinach or Google 'Spinach Iron Myth', ... Dr. E. von Wolf whose figures remained unchallenged until 1937, when it was discovered that the content was 1/10th the claim. The oversight resulted from a misplaced decimal point I think he worked in IT