If there is an amount in both boxes 6 and 11, for a tax-exempt obligation that. is a covered security acquired on or after January 1, 2017, and issued with OID, the amount in box 6 shows the amount of acquisition premium amortization for. the year that reduces the amount of your tax-exempt OID for the year.
Excessive blood loss. 1  Blood loss from the gastrointestinal (GI) tract is the most common cause of IDA in adult men and postmenopausal women. 2  Blood loss due to menorrhagia is the most common cause of iron deficiency in pre-menopausal women.
The three major causes of iron deficiency are: 1  Chronic or excessive bleeding. Long-term (chronic) bleeding is the most common cause of iron loss that leads to iron deficiency. 2  Decreased ability to absorb iron. Medicines that reduce stomach acids may cause iron absorption problems. 3  Insufficient iron intake.