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Anemia

At GastroDoxs in Houston, gastroenterologist Dr. Nghia Nguyen offers comprehensive anemia diagnosis and treatment. Using advanced testing, personalized nutrition guidance, targeted therapies, Dr. Nguyen uncovers underlying causes—ensuring optimal healthy recovery, wellness, and lasting vitality for patients experiencing iron deficiency anemia.

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Difficulty Swallowing

American Society for Gastrointestinal Endoscopy

About the Expert

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

Iron deficiency from inadequate dietary intake or low iron stores
Chronic blood loss (e.g., heavy menstrual periods, gastrointestinal bleeding)
Malabsorption disorders (e.g., celiac disease, inflammatory bowel disease)
Inherited blood disorders (e.g., sickle cell anemia, thalassemia)
Chronic kidney or liver disease
Vitamin B12 or folate deficiency

Signs and Symptoms

Fatigue or persistent tiredness
Weakness or lack of energy
Shortness of breath, especially during physical activity
Pale or slightly yellow skin
Dizziness or lightheadedness
Headaches
Cold hands and feet

How Dr. Nghia Nguyen Diagnoses Anemia

Dr. Nguyen follows a thorough diagnostic approach:

Medical History and Physical Exam

He starts by reviewing your symptoms—such as fatigue, weakness, or pale skin—and checks for physical signs of low blood levels.

Complete Blood Count (CBC)

This test reveals your red blood cell count, hemoglobin levels, and hematocrit, which are key indicators of anemia.

Nutrient Deficiency Testing

Blood tests check for iron, vitamin B12, and folate levels to identify nutritional causes of anemia.

Diagnostic Procedures (if needed)

If internal bleeding is suspected, Dr. Nguyen may recommend an upper endoscopy or colonoscopy to locate the source.

ICD-10 Coding

The appropriate ICD-10 code is used for diagnosis documentation and insurance purposes.

Treatment

Our Team offers a full range of care for anemia.

1. Diet and Lifestyle Changes

Eat more iron-rich foods like red meat, spinach, and beans
Pair iron sources with vitamin C (e.g., oranges, bell peppers) to boost absorption
Limit coffee, tea, and dairy at meals to prevent reduced iron uptake
Ensure adequate rest and hydration during recovery

2. Medications

Oral iron supplements such as ferrous sulfate or ferrous gluconate
Vitamin C supplementation to enhance iron absorption
Vitamin B12 or folate tablets or injections if indicated
Regular blood tests to monitor treatment response

3. Minimally Invasive or Advanced Procedures

Endoscopy or colonoscopy to locate and treat internal bleeding
Blood transfusion for severe or acute anemia cases
Intravenous iron therapy for patients who cannot tolerate or respond to oral iron

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About the Author

Frequently Asked Questions

What is the ICD-10 code for iron deficiency anemia?

The most common code is D50.9.

Can I be low on iron but not anemic?

Yes. Low iron stores can cause symptoms even if your red blood cell count looks normal.

How long before I feel better?

Most people notice more energy within two to four weeks of starting treatment.

Will I need a blood transfusion?

Only in severe cases. Dr. Nguyen will decide based on your symptoms and test results.

Are there side effects to iron pills?

Yes. Some people experience nausea or constipation. Changing how or when you take them can help.

Do I need a special diet?

A diet high in iron and vitamin C supports recovery. Dr. Nguyen may refer you to a dietitian if needed.

Where can I learn more?

Visit the Gastro Clinic website at www.mayoclinic.org for additional information.

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