Why do i need more iron during pregnancy?

Change in volume: During pregnancy, your blood volume basically doubles. The red blood cells may not be able to keep up with the volume increase and this will cause your hemoglobin to drop. Low hemoglobin can make you tired and short of breath. Taking iron and increasing your fluids can get your hemoglobin back up.

For you and baby: Iron is essential you and your baby. Iron is needed to make blood, brain , muscle nerce and other cell functions.