Do you feel tired all the time, even after a good night’s sleep? Struggling with brain fog, shortness of breath, or brittle nails? These symptoms are often dismissed or chalked up to a busy lifestyle—but they could be signs of something more: iron deficiency.
Iron deficiency is the most common nutritional deficiency worldwide, and it affects women—especially those of reproductive age—more frequently than men. While fatigue is one of the most recognized symptoms, iron plays a vital role in many body systems. When levels are low, the impact can be far-reaching.
At Intrepid Health, we see many patients who live with unexplained fatigue for years before discovering that low iron is the root cause. The good news? Once identified, iron deficiency is highly treatable.
What Is Iron Deficiency?
Iron is essential for making hemoglobin, a protein in red blood cells that carries oxygen from your lungs to the rest of your body. When your iron stores are low, your body can’t produce enough healthy red blood cells—a condition known as iron deficiency anemia.
You can also be iron deficient without anemia. In these cases, symptoms still occur even though blood tests may show normal hemoglobin levels. That’s why it’s important to assess iron stores (ferritin) as well.
Common Causes of Iron Deficiency
1. Menstruation
For many women, monthly blood loss is the primary reason iron levels fall—especially if periods are heavy or prolonged. This can lead to a gradual depletion of iron over time.
2. Pregnancy
During pregnancy, your iron needs increase dramatically to support fetal development and increased blood volume. Without supplementation, deficiency is common.
3. Dietary Gaps
Iron is found in foods like red meat, lentils, spinach, and fortified cereals. People who follow vegetarian or vegan diets may need to be especially mindful of iron intake and absorption.
4. Poor Absorption
Conditions like celiac disease, inflammatory bowel disease (IBD), or bariatric surgery can impair your body’s ability to absorb iron, even if your diet is sufficient.
5. Chronic Blood Loss
In addition to menstrual bleeding, blood loss from ulcers, gastrointestinal conditions, or frequent blood donations can also deplete iron stores.
Signs and Symptoms to Watch For
Iron deficiency symptoms can range from subtle to severe. Common signs include:
- Fatigue or weakness
- Pale skin
- Shortness of breath
- Dizziness or light-headedness
- Cold hands and feet
- Headaches
- Brittle nails or hair thinning
- Cravings for non-food items (like ice or clay) – known as pica
- Difficulty concentrating or “brain fog”
If you’re experiencing several of these symptoms, a simple blood test can determine your iron levels.
Testing and Diagnosis
To assess iron status, your provider may order:
- Hemoglobin and hematocrit – to evaluate red blood cell levels
- Serum ferritin – to measure stored iron (often the most sensitive early indicator)
- Serum iron and transferrin saturation – to assess iron in circulation and transport
It’s important to test both ferritin and hemoglobin to get a full picture, especially if you have symptoms but normal red blood cell counts.
Treatment Options
If you’re diagnosed with iron deficiency, treatment depends on the severity and cause:
🔹 Diet and Supplements
- Iron-rich foods: red meat, dark leafy greens, legumes, tofu, and fortified grains
- Iron supplements: Often taken daily or every other day to improve absorption and reduce side effects like constipation or nausea
- Vitamin C can help boost absorption when taken with iron
- Avoid taking iron with calcium, dairy, or caffeine, which can interfere with absorption
🔹 Intravenous (IV) Iron
For those who can’t tolerate oral supplements or have severe deficiency, IV iron infusions can rapidly replenish iron stores.
🔹 Addressing Underlying Causes
If heavy menstrual bleeding or digestive conditions are contributing, treating those root issues is essential to prevent future deficiency.
You Don’t Have to Power Through
It’s easy to normalize feeling exhausted—especially for women juggling work, family, and health—but chronic fatigue isn’t something you should just “get used to.” Iron deficiency is common, but it’s also highly manageable with the right support.
At Intrepid Health, we take your symptoms seriously. Our experienced team will investigate the cause, assess your iron status, and create a personalized treatment plan to help you feel like yourself again—all with the care of a trusted family doctor in Keswick.
