Your hair might be showing signs of iron deficiency long before your bloodwork does Learn how to spot the early warning signs ...

In both instances, the culprit impeding iron absorption is tannin. Tannins are potent polyphenol compounds that give tea, coffee, and red wine their dry and puckery taste. With coffee, tannin ...

“Tannins are a type of polyphenol that bond to iron in certain foods, inhibiting its absorption in your digestive system.” That’s particularly the case with plant-based (non-heme) iron ...