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.
Iron deficiency anaemia - Causes. Causes of iron deficiency anaemia. Iron deficiency anaemia occurs when the body doesn't have enough iron, leading to the decreased production of red blood cells. Red blood cells carry oxygen around the body. A lack of iron can be caused by several factors. Some of the most common causes of iron deficiency anaemia are outlined below.