Women need extra calcium to prevent osteoporosis and extra iron to overcome the blood loss that occurs with menstruation.
Calcium blocks the absorption of iron.
If you take supplements of both, take one in the morning and one in the evening. Ideally, you should have milk products at two meals and iron-rich foods at the third. Applying antiperspirant to your underarms before a mammogram can lead to a false reading. Antiperspirants contain metals that can be mistaken on a mammogram for calcium deposits, which can be a sign of cancer. Women need extra calcium to prevent osteoporosis and extra iron to overcome the blood loss that occurs with menstruation.