Anemia
Causes of dizziness and fatigue – The causes of anemia and how to take iron supplements. - **Symptoms:** - Dizziness - Fatigue - Shortness of breath - Pale skin - Cold hands and feet - **Causes:** - Iron deficiency - Vitamin B12 deficiency - Folate deficiency - Chronic diseases - Blood loss - **Iron supplement usage:** - Consult a doctor before taking iron supplements. - Take iron supplements with food to reduce stomach upset. - Avoid taking iron supplements with calcium, tea, or coffee, as these can interfere with absorption. - Follow the dosage instructions on the label.
Anemia is not a disease name, but rather a signal.
Anemia is a condition where there is a deficiency of hemoglobin in the blood, leading to easy fatigue, dizziness, paleness, and shortness of breath even with mild exertion like climbing stairs.
- The most common cause is iron deficiency, often seen in women with heavy menstrual bleeding, during periods of growth, pregnancy, or due to gastrointestinal bleeding.
- It's important to understand why the iron deficiency occurred. In particular, iron deficiency anemia in middle age and beyond may be associated with hidden gastrointestinal bleeding (ulcers, rarely cancer), so endoscopic examinations are often recommended.
Source: 질병관리청 국가건강정보포털 · as of 2026-08-13
How to take iron supplements properly.
- Iron supplements usually need to be taken for more than 3 to 6 months to replenish iron stores. If you stop taking them as soon as your levels improve, the condition will likely recur.
- It's best to take iron supplements on an empty stomach for better absorption, but if it causes discomfort, you can switch to taking them after meals. Taking them with vitamin C increases absorption, while coffee, green tea, milk, and antacids can interfere with absorption, so avoid taking them at the same time.
- It's normal for your stool to become darker when taking iron supplements.
Frequently asked questions
Does dizziness always mean anemia?
No, dizziness caused by spinning is more often related to problems with the ear (such as benign paroxysmal positional vertigo or vestibular neuritis). Whether you have anemia can be easily checked with a blood test, so instead of self-diagnosing and taking iron supplements, it's better to confirm the cause.
I'm taking iron supplements, but my anemia isn't improving.
It is necessary to check for habits that may interfere with absorption (such as taking it at the same time as coffee), whether bleeding persists, and whether the anemia is caused by something other than iron deficiency. If there is no improvement even after taking it for 2-3 months, please consult an internal medicine specialist.
Sources for this page
· 질병관리청 국가건강정보포털 (as of 2026-08-13)Last checked: 2026년 8월 13일
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