Iron: Iron deficiency anemia though less common than in adults, is found in those who take less energy. It also occurs due to chronic blood loss from diseases and medicines and also due to reduced acid secretion or antacid use.
Zinc Both intake and absorption of zinc is low in elderly people. Medications also impair zinc absorption. RDA for zinc is 15 mg/day for men and 12 mg/day for women.
Calcium The calcium intake of many elders is below the RDA. Calcium RDA for elders is around 1200mg/day. Consumption of milk or products as well as rich sources like some green leafy vegetables, oil seeds, oysters, sardines will help in maintaining good calcium levels.