2011-02-20, 19:41
#13
Citat:
Ursprungligen postat av Vitsippan_79
Nej, inte om man behöver dem, har man järnbrist är det nyttigt. Har man däremot för mycket järn i kroppen, ja då är det farligt med järntablettter.
Har man för mycket järn i kroppen så lider man förmodligen av hemakromatos, kroppen kan oftast reglera upptaget av järn men vid t.ex. överdos av järntabletter kan det leda till "iron overload".
från wiki:
"Iron overload
The body is able to substantially reduce the amount of iron it absorbs across the mucosa. It does not seem to be able to entirely shut down the iron transport process. Also, in situations where excess iron damages the intestinal lining itself (for instance, when children eat a large quantity of iron tablets produced for adult consumption), even more iron can enter the bloodstream and cause a potentially deadly syndrome of iron intoxication. Large amounts of free iron in the circulation will cause damage to critical cells in the liver, the heart and other metabolically active organs.
Iron toxicity results when the amount of circulating iron exceeds the amount of transferrin available to bind it, but the body is able to vigorously regulate its iron uptake. Thus, iron toxicity from ingestion is usually the result of extraordinary circumstances like iron tablet overdose[8] rather than variations in diet. Iron toxicity is usually the result of more chronic iron overload syndromes associated with genetic diseases, repeated transfusions or other causes. Classic examples of genetic iron overload includes Hereditary Hemochromatosis (HH) and the more severe disease Juvenile Hemochromatosis (JH) caused by mutations in either the gene RGMc gene, a member of a three gene repulsive guidance molecule family [3], (also called hemojuvelin (HJV), and HFE2), Hemojuvelin, or the HAMP gene that encodes (an iron regulatory peptide)."
