Green tea, rosemary extract in foods reduces nonheme-iron absorption
A few things to consider here. First, in most men and post-menopausal women, excess iron is believed to be a contributor to overall oxidative stress. If this is the case, then the reduced absorption from foods may not be a bad thing. On the other hand, so many of us are hypochlorhydric (not enough stomach acid) and absorption of iron is a problem. I would not let this study defer anyone from drinking green tea, which has many other documented health benefits.
AJCN — Abstracts: Samman et al. 73 (3): 607