Re: BSM and Iron.

With Iron, as with all minerals, a feedback mechanism exists that is turned ON to enhance iron absorption when one is iron deficient and is turned OFF in one who may have an iron overload.

I believe it is possible that this feedback mechanism can, in some cases, be dysfunctional due to any number of reasons. Getting your nutritional needs met through clean food sources, is much better and far safer than through supplementation.

If you want to be cautious about your iron uptake, know that ascorbate and citrate increase uptake, and that plant phytates and tannins inhibit uptake. The phyates and tannins can act as an iron chelating agent as well... Phytic acid also chelates other important minerals such as calcium, magnesium, iron, zinc, and niacin.

That brings us to Lead, which is taken up by the iron absorption machinery if exposed, especially if one is iron deficient. In the absence of sufficient calcium in the diet, this effect is exacerbated may times. In addition, once taken up, lead blocks iron through competitive inhibition and interferes with a number of iron-dependent metabolic functions, heme biosynthesis, being one.

Lead is one reason among many that one should not only be iron sufficient, but also calcium sufficient, as adequate calcium will help to block lead absorption...

grz-

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