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Iron Deficiency
Iron deficiency develops when your body lacks iron to make red blood cells, causing fatigue, weakness, and more. At GastroDoxs in Houston, Dr. Nghia Nguyen provides evaluation, advanced testing, tailored treatments—from dietary guidance to iron therapy—to help you restore energy.
Dr. Nghia Nguyen, DO, is a board-certified gastroenterologist providing advanced digestive care in the Greater Houston area. He earned his medical degree from the Texas College of Osteopathic Medicine and completed both his Internal Medicine residency and Gastroenterology fellowship at the University of Texas at Rio Grande Valley. Dr. Nguyen specializes in treating conditions such as acid reflux, irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and liver disorders.
Common Causes and Risk Factors
A diet low in iron (insufficient red meat, beans, or leafy greens)
Blood loss from heavy menstrual periods or gastrointestinal bleeding
Increased iron needs during pregnancy or rapid growth in teens
Malabsorption issues (e.g., celiac disease)
Frequent blood donations or recent major surgery
Signs and Symptoms
Persistent tiredness or weakness
Pale or yellowish skin (pallor)
Shortness of breath, dizziness, or chest pain
Brittle nails, hair thinning, or increased hair shedding
Restless legs syndrome or cold hands and feet
Brain fog or difficulty concentrating
How Dr. Nghia Nguyen Diagnoses It
Step-by-Step Diagnostic Approach:
Health History Review
Dr. Nguyen begins by reviewing your medical history, current symptoms, diet, and any underlying conditions.
Physical Examination
He performs a thorough physical exam to check for visible signs of anemia or related conditions, such as fatigue, pallor, or rapid heartbeat.
Blood Tests
Hemoglobin and Hematocrit: Measures the amount and proportion of red blood cells.
Serum Ferritin and Iron-Binding Capacity: Evaluates your body's iron stores.
Complete Blood Count (CBC): Analyzes red blood cell levels, size, and hemoglobin concentration.
Diagnosis and ICD-10 Code
Lab results confirm the diagnosis and help assign the correct ICD-10 code for treatment planning and insurance purposes.
Treatment
Our Team offers a full range of care for iron deficiency.
1. Diet and Lifestyle Tips
Eat more iron-rich foods like beef, lentils, or spinach
Pair iron with vitamin C sources such as oranges or bell peppers
Avoid coffee or tea during meals to enhance iron absorption
2. Medications
Oral iron supplements (ferrous sulfate or ferrous gluconate)
IV iron therapy for patients who cannot tolerate pills
Regular blood tests to monitor hemoglobin and ferritin levels
3. Minimally Invasive Procedures
Upper endoscopy or colonoscopy to identify and treat GI bleeding
Capsule endoscopy for evaluation of deeper small-bowel sources
Dr. Nghia Nguyen, DO, is a board-certified gastroenterologist providing advanced digestive care in the Greater Houston area. He earned his medical degree from the Texas College of Osteopathic Medicine and completed both his Internal Medicine residency and Gastroenterology fellowship at the University of Texas at Rio Grande Valley. Dr. Nguyen specializes in treating conditions such as acid reflux, irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and liver disorders.
Frequently Asked Questions
What are the 3 stages of iron deficiency?
Iron depletion → Iron-deficient red blood cell production → Iron deficiency anemia.
What is the ICD-10 code?
D50.9 for unspecified iron deficiency anemia.
How long until I feel better?
Most patients notice improvement in 4-8 weeks. Full recovery can take 3-6 months.
Can iron deficiency cause hair loss?
Yes. Low iron may slow hair growth and increase shedding.
Should I worry about iron if I'm pregnant?
Yes. You need more iron during pregnancy. Dr. Nguyen will monitor your levels closely.
Are there side effects from iron pills?
Some people experience nausea or constipation. Dr. Nguyen can recommend alternative options.
Do I need an endoscopy?
Only if blood loss or GI bleeding is suspected; it helps identify the source.
