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 Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.
To prevent that from happening, the United States adopted a new national policy of hemisphere defense. Between 1939 and 1942 the Army played a key role in executing this policy. The achievement of substantial security within the hemisphere permitted the United States to concentrate on the offensive soon after the Japanese attacks on Oahu and Luzon plunged the nation into open war in December 1941.