Knowledge Check • The Blood Project

What is the mean daily iron intake in developed countries?

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12-15 mg

How much iron is absorbed daily?

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1-2 mg (increasing to 6 mg in the third trimester of pregnancy)

Non-heme iron is absorbed in the duodenum as:

a

Ferrous iron (Fe2+)

b

Ferric iron (Fe3+)

Match the source of dietary iron with the state of iron

Non-heme iron

Heme iron

Ferrous (Fe2+)

Ferric (Fe3+)

Correct! Sorry, Incorrect.

What is the most common cause of iron deficiency in females premenopause?

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Menstrual blood loss

What is the most common cause of iron deficiency in female adults postmenopause and male adults?

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Blood loss from the gastrointestinal tract

True or false: malnutrition is a common cause of iron deficiency.

a

True

b

False

Malnutrition is rarely sufficient to cause iron deficiency anemia in high-income countries.

Sort the cause of iron deficiency anemia (top cards) with the mechanism (bottom buckets):

Celiac disease

Atrophic gastritis

H. pylori

Gastrointestinal lesions

Infancy

Pregnancy

Adolescence

Menstruation

Bariatric surgery

Frequent blood donation

Increased demand

Decreased absorption

Chronic blood loss

Fill in the three blue fields

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Malnutrition
Vegan diet
Vegetarian diet

What percentage of men and postmenopausal women with iron deficiency anemia have GI cancer?

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About 10%