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.
Causes of iron deficiency that are related to blood loss include: Bleeding in the digestive tract, often due to ulcers and inflammation of the stomach (gastritis). This is the most common cause of iron loss in men. Both men and women over age 60 are at an increased risk of digestive tract bleeding.