Why does the Cronometer entry for chia seeds have double the amount of iron I'm able to find on nearly any food label? Even the USDA and Google report a significantly lower level of iron.
Which Cronometer database did you use? For 1 ounce in the USDA database Cronometer entry for ¨Seeds, Chia seeds, dried" has 2.2 mg, and 2.19 when I go to the USDA website (Basic Report 12006). https://ndb.nal.usda.gov/ndb/foods/show/3610?fgcd=&manu=&lfacet=&format=&count=&max=50&offset=&sort=default&order=asc&qlookup=chia+seeds&ds=Standard+Reference&qt=&qp=&qa=&qn=&q=&ing= )
Google only shows me % daily value, but that has a much lower amount. It doesn't surprise me. Foods are not standardized supplements. I am sure there is a massive variation in their nutritional content.
The USDA source was hidden from me until I manually went and filtered my search! Didn't realize that could happen. For 1 oz the NCCDB entry lists 4.6mg. I just compared both entries and the iron content is practically the only difference between them (besides vitamin K). I know foods aren't comparable to supplements, but I thought the NCCDB was like the new and improved USDA database. I thought it would be more accurate to modern food labels.
Btw if you just Google "iron in chia seeds" you'll get the amount (2.2mg there also).