Sorry if this is "duplicate" info -- I've already posted to this thread, but my reply isn't here.

Do you drink lots of coffee? Coffee inhibits iron absorption so well, that if one is low in iron one shouldn't drink coffee before or after meals.

Do a search on IRON-absorption AND coffee -- there's over 20,000 search results at google, and there are plenty of other things like copper, calcium & magnesium, etc. that inhibit iron absorption.