home *** CD-ROM | disk | FTP | other *** search
- FUNCTION-
-
- Iron is essential to the for-
- mation of hemoglobin, which
- carries oxygen in the blood-
- stream, and myoglobin,
- which delivers oxygen to the
- muscles. Iron also works
- with and makes several en-
- zymes and proteins in the
- body.
-
-
- FOOD SOURCES-
-
- Heme iron is found in meat,
- poultry, and fish. Nonheme
- iron is found in plant food.
- To enhance the absorption
- of nonheme iron from grains
- and vegetables, eat vitamin
- C rich foods at the same
- meal. Cooking in cast-iron
- pots can increase the iron
- content of food. Many ce-
- reals are now fortified with
- iron.
-
-
- RISKS WITH EXCESS
-
- There is no risk of excess
- Iron from food sources, but
- there is a risk of excess iron
- from supplementation for
- Americans with the genetic
- disorder hemochromatosis.
- This is an inherited tendency
- to store excess iron. Intakes
- are safe for adults below 75
- mg per day; although, 3 g is
- a lethal dose for a 2-year-old
- child. Iron supplements and
- multivitamins are the second
- most common form of poi-
- soning in the U.S. for young
- children.
-
-
- RISKS WITH DEFICIENCY-
-
- Iron deficiency is connnon in
- the U.S. even with a well
- balanced diet, especially
- with menstruating women,
- pregnantwomen, endurance
- athletes, strict vegetarians,
- and infants and children. Be
- sure to consult your physi-
- cian before taking iron sup-
- plements because large
- doses can cause damage to
- the liver, pancreas, and
- heart.
-
-
-