1.9K Reviews | 4.7 Star Rating | 20+ years of experience | 72k+ Patients Treated
Obesity
Dr. Nghia Nguyen at GastroDoxs in Houston offers comprehensive obesity care, combining personalized lifestyle plans, FDA-approved medications, and non-surgical interventions. His holistic approach addresses medical, nutritional, and behavioral factors to safely achieve and maintain healthy weight loss and improved wellness.
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
Calorie intake exceeding energy expenditure
Poor dietary habits (high in processed foods, sugars, and unhealthy fats)
Genetic predisposition and family history of obesity
Certain medications (steroids, antipsychotics, some antidepressants)
Chronic stress, inadequate sleep, and mental health factors
Signs and Symptoms
Body Mass Index (BMI) of 30 or higher
Excess fat accumulation, particularly around the waist
Shortness of breath or difficulty breathing with mild exertion
Persistent tiredness, low energy, or daytime sleepiness
Joint pain, stiffness, or reduced mobility
High blood pressure, elevated blood sugar, or abnormal lipid levels
How Dr. Nghia Nguyen Diagnoses?
Dr. Nguyen uses a step-by-step approach:
Medical History and Symptom Review
He discusses the onset, location, character, timing, and triggers of your epigastric pain, along with your diet, weight history, stress levels, and medication use.
Physical Examination
He palpates your abdomen to identify areas of tenderness, mass, or signs of visceral fat distribution that may contribute to discomfort.
Laboratory Tests
CBC and metabolic panel to check for anemia, infection, electrolyte imbalances, and organ function.
Liver function tests and pancreatic enzymes (amylase/lipase) to rule out hepatobiliary or pancreatic causes.
Helicobacter pylori breath or stool antigen test to detect ulcer-causing bacteria.
Imaging Studies
Abdominal ultrasound to evaluate the gallbladder, liver, and pancreas for stones, inflammation, or masses.
CT scan of the abdomen when more detailed cross-sectional imaging is required.
Upper Endoscopy (EGD)
Direct visualization of the esophagus, stomach, and duodenum to identify ulcers, gastritis, esophagitis, or other mucosal lesions.
Advanced Diagnostics (if needed)
Gastric emptying study for suspected gastroparesis, ambulatory pH monitoring for acid reflux, or specialized motility testing.
Treatment
Our Team offers a full range of care for obesity.
1. Lifestyle and Diet Modifications
Personalized meal plans emphasizing whole foods, fruits, vegetables, and reduced sugar and unhealthy fats
Exercise programs beginning with walking and light strength training to support steady weight loss
Guidance on improving sleep, managing stress, and tracking meals, physical activity, and progress
2. Medications
We follow the latest FDA weightâmanagement guidelines.
We may prescribe FDA-approved medications to reduce hunger or slow digestion, including newer treatments such as those from Novo Nordisk.
3. Minimally Invasive or Advanced Procedures
Endoscopic sleeve gastroplasty to reduce stomach volume without surgery
Gastric balloon placement to promote earlier satiety
Consideration of bariatric surgery options (e.g., biliopancreatic diversion) when indicated
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 is class 3 obesity?
Class 3 obesity is defined as a BMI of 40 or higher. It carries significant health risks and often requires more than diet and exercise alone to manage.
How soon will I see weight loss results?
Many patients notice changes within a few weeks. Dr. Nguyen sets realistic goals and adjusts your plan over time for steady, sustainable progress.
Does insurance cover obesity treatment?
Coverage depends on your specific plan. Our office provides the correct diagnosis and procedure codes (like E66.x) to help with insurance review.
Are new medications like Novo Nordisk treatments safe?
Yes. These FDA-approved drugs have passed rigorous safety trials. Dr. Nguyen will explain how they work, potential side effects, and monitoring protocols.
Can obesity affect the brain and nervous system?
Yes. Excess body fat can disrupt brain signals that regulate hunger, fullness, and energy expenditure. Addressing these changes is crucial for long-term success.
Can I take medication and still have a weight loss procedure?
Absolutely. Combining pharmacotherapy with minimally invasive procedures can enhance results. Dr. Nguyen will recommend the safest, most effective strategy for you.
