Pregnant women iron why shit black

Pregnant women iron pull black stool, mainly because after oral iron, did not get complete digestion, resulting in iron long-term stay in the pregnant woman's body, after oxidation together with the excretion of the body, will show the phenomenon of pulling black stool; Secondly, pregnant women in the iron supplement period eat too much animal blood, animal liver and other foods rich in iron, will also appear to pull black stool situation, generally stop eating the above food, stool color can return to normal; In addition, the possibility of upper gastrointestinal bleeding cannot be ruled out.