Iron Deficiency Anemia
What is Iron Deficiency Anemia?
Iron deficiency anemia happens when your body does not have enough iron to make hemoglobin. Hemoglobin is a protein in red blood cells that carries oxygen throughout your body. Without enough iron, your cells cannot get the oxygen they need to work properly.
This is the most common type of anemia in the United States. It develops slowly over time as your iron stores run low. Your body tries to adapt by making smaller red blood cells with less hemoglobin. Eventually, you may feel tired, weak, or short of breath during normal activities.
Iron deficiency anemia is not just about feeling tired. It can affect your immune system, body temperature, and ability to think clearly. The good news is that it responds well to treatment when caught early through blood testing.
Symptoms
- Fatigue and weakness that interfere with daily activities
- Pale or yellowish skin
- Shortness of breath during exercise or normal activities
- Cold hands and feet
- Brittle nails or hair loss
- Dizziness or lightheadedness
- Fast or irregular heartbeat
- Headaches
- Sore or swollen tongue
- Unusual cravings for ice, dirt, or starch
Many people have no symptoms in the early stages. As iron stores drop further, symptoms usually appear gradually and worsen over time.
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Causes and risk factors
The most common cause is blood loss. Heavy menstrual periods account for many cases in women of reproductive age. Bleeding in the digestive tract from ulcers, polyps, or stomach infections like Helicobacter pylori can cause slow blood loss. Cancer in the colon or stomach may also lead to bleeding. Regular use of aspirin or other anti-inflammatory drugs can irritate the stomach lining and cause bleeding.
Not getting enough iron from food is another common cause. Pregnant women, children, and vegetarians need more iron than the average person. Your body may also struggle to absorb iron if you have celiac disease, Crohn's disease, or have had gastric bypass surgery. Donating blood frequently can deplete iron stores over time.
How it's diagnosed
Blood tests are the primary way to diagnose iron deficiency anemia. A complete blood count checks your hemoglobin levels and looks at the size and shape of your red blood cells. Small red blood cells with low hemoglobin often signal iron deficiency. Tests measuring ferritin, serum iron, transferrin saturation, and total iron binding capacity help confirm low iron stores.
Rite Aid offers testing for iron deficiency anemia through our preventive health panel. We measure ferritin, serum iron, transferrin saturation, and other key markers at Quest Diagnostics locations nationwide. Your doctor may order additional tests to find the source of iron loss, such as screening for Helicobacter pylori infection or checking for internal bleeding.
Treatment options
- Iron supplements taken daily, usually in the form of ferrous sulfate or ferrous gluconate
- Eating iron-rich foods like red meat, poultry, fish, beans, lentils, and fortified cereals
- Pairing iron-rich foods with vitamin C sources like citrus fruits or tomatoes to improve absorption
- Avoiding tea, coffee, and calcium supplements within 2 hours of taking iron, as they reduce absorption
- Treating the underlying cause of blood loss, such as heavy periods or stomach ulcers
- Intravenous iron infusions for severe cases or when oral supplements cause side effects
- Blood transfusions in rare cases when anemia is life-threatening
Concerned about Iron Deficiency Anemia? Get tested at Rite Aid.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Iron deficiency means your body has low iron stores but is still making enough red blood cells. Iron deficiency anemia means your iron levels are so low that you cannot produce adequate hemoglobin. Iron deficiency comes first and can progress to anemia if not treated.
Most people start feeling better within 1 to 2 weeks of starting iron supplements. However, it takes 2 to 3 months to rebuild your iron stores completely. Your doctor will recheck your blood levels after a few months to confirm improvement.
Yes, eating a balanced diet with iron-rich foods helps prevent deficiency. Women with heavy periods should talk to their doctor about managing blood loss. People at higher risk, such as pregnant women or vegetarians, may need iron supplements as a preventive measure.
Red meat, chicken, turkey, and fish contain heme iron that your body absorbs easily. Plant sources like beans, lentils, spinach, and fortified cereals contain non-heme iron. Eating vitamin C with plant-based iron improves absorption significantly.
Craving and chewing ice is called pagophagia and is common in people with iron deficiency. Researchers do not fully understand why this happens. The craving usually disappears once iron levels return to normal with treatment.
Yes, iron plays a key role in hair growth. When your body lacks iron, it prioritizes vital organs and reduces resources to hair follicles. This can lead to thinning hair or increased shedding. Hair usually grows back once iron levels improve.
Low hemoglobin and low ferritin levels strongly suggest iron deficiency anemia. Small red blood cells, measured by mean corpuscular volume, also point to this condition. Your doctor looks at multiple markers including serum iron, transferrin saturation, and total iron binding capacity for confirmation.
Iron supplements are safe for most people when taken as directed. However, they can cause constipation, nausea, or stomach upset. People with hemochromatosis or certain genetic conditions should avoid iron supplements. Always consult your doctor before starting supplementation.
Yes, men can develop iron deficiency anemia, though it is less common than in women. In men, it often signals internal bleeding from the digestive tract. Any man diagnosed with iron deficiency should be evaluated for bleeding ulcers, polyps, or other gastrointestinal issues.
Yes, untreated iron deficiency anemia during pregnancy increases risks for both mother and baby. It can lead to premature birth, low birth weight, and postpartum depression. Pregnant women need about 27 milligrams of iron daily and should get tested regularly throughout pregnancy.