Dangers of Iron Supplements

我不是医生。 从我了解的来说，绝大部分成年男士不是缺铁，而是铁过剩，如果单从这点来看，每年捐血的确对健康有利。另外，易口腔溃疡的人可能体内自由基过多，补铁会加重症状， 犹如火上浇油。当然，口服多元维他命实在是吸收有限，不仅是铁，其他维他命的确也吸收不了多少。多喝新鲜的蔬菜汁就很好了，要现榨汁的。少喝果汁，铁太多。铁过剩会造成zinc 不足。这里有篇文章作参考。

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Dangers of Iron Supplements
Iron is unique among essential minerals, because there is no mechanism for its excretion once absorbed into the body. Whatever iron is absorbed must either be used or stored and excessive storage of iron in the body promotes the generation of free radicals. Excess dietary iron has been implicated by some scientists as a cause of cancer and heart disease. It also increases the risk of bacterial infection.
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No one should ever take iron supplements unless iron deficiency is present, with the possible exception of pregnant women. The best test for iron deficiency is a blood test called the serum ferritin level. Ferritin is a protein that carries iron, and low ferritin levels are a common sign of iron deficiency. Like all laboratory tests, the interpretation of ferritin levels is subject to interpretation. Because the body has a limited capaci-ty for iron absorption, it does not make any sense to administer more than twenty milligrams of elemental iron at a time. Iron should not be taken as part of a multivitamin or multimineral preparation. Iron interferes with the absorption of the essen-tial minerals zinc, manganese and molybdenum; it destroys vitamin E; its own absorption is blocked by calcium and magnesium. Iron is best absorbed after a meal, with a small quantity of vitamin C (between one hundred and five hundred milligrams).

Archived columns by Leo Galland M.D., F.A.C.N.

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• I do not think the auther's -Dr-Doctor- ♂ (385 bytes) () 08/21/2004 postreply 16:41:10