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Weight Loss
At GastroDoxs in Houston, Dr. Nghia Nguyen offers personalized weight loss solutions combining medical expertise and lifestyle support. Tailored meal plans, exercise routines, advanced procedures, and safe medications guide you every step toward sustainable, healthy results with compassionate, comprehensive care.
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.
What Is Weight Loss?
Weight loss refers to a decrease in total body mass. It happens when your body burns more calories than you consume. While planned, gradual weight loss can be healthy under expert supervision, sudden or unintended weight loss may indicate an underlying medical issue.
Common Causes and Risk Factors
Poor diet high in sugar, refined carbs or unhealthy fats
Insufficient physical activity or prolonged sedentary behavior
Chronic illnesses such as diabetes, celiac disease or inflammatory bowel disorders
Side effects of medications (e.g., stimulants, certain antidepressants)
Psychological stress, anxiety or depression
Signs and Symptoms
Unintended loss of more than 5% of body weight over 6-12 months
Noticeable loss of muscle mass or physical strength
Persistent fatigue, weakness or lightheadedness
Digestive complaints such as nausea, diarrhea or poor appetite
Evidence of vitamin or mineral deficiencies
How Dr. Nghia Nguyen Diagnoses Weight Loss with?
Dr. Nguyen uses a step-by-step approach:
Medical History and Physical Exam
She reviews your pain pattern—onset, location, triggers—and asks about your appetite, dietary habits, medications, and any unintentional weight loss.
Blood Tests
We check for anemia, inflammation markers, thyroid function, liver and pancreatic enzymes, plus H. pylori and celiac panels to rule out common causes.
Imaging and Endoscopy
Upper endoscopy (EGD) to look for gastritis, ulcers, or esophageal issues
Abdominal ultrasound to evaluate the liver, gallbladder, pancreas, and biliary tract
Advanced Testing (if needed)
Gastric emptying studies, pH monitoring, or CT/MRI scans may be ordered when initial tests are inconclusive or if structural disease is suspected.
Treatment
Our Team offers a full range of care for weight loss management.
1. Lifestyle and Diet Support
Personalized meal plans focusing on whole grains, lean protein, and fresh vegetables
Guidance on choosing and using protein powders to build muscle
Customized exercise routines designed around your daily schedule
Stress-relief techniques such as deep breathing, yoga, and mindfulness
2. Medications
Prescription weight loss medications selected for your health profile
Ongoing monitoring to track progress and adjust doses for safety
Close attention to any memory, mood, or metabolic side effects
3. Minimally Invasive or Advanced Procedures
Endoscopic sleeve gastroplasty to reduce stomach volume without surgery
Gastric balloon placement to curb appetite and support portion control
Weekly semaglutide injections administered under expert supervision
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
How soon will I see weight loss results?
Most patients notice changes within 4-6 weeks when following a personalized plan of nutrition, exercise, and, if needed, medications or procedures.
Do I need surgery to lose weight?
No. Many patients achieve their goals through tailored meal plans, lifestyle modifications, and safe prescription medications. Advanced endoscopic procedures are optional and based on individual needs.
What is the best protein powder for muscle support?
Look for a powder with at least 20 g of protein per serving, low sugar, and a complete amino acid profile. Whey, casein, and plant-based blends are popular, research-backed choices.
Are weight loss supplements safe?
Only some supplements have solid clinical evidence. Dr. Nguyen recommends research-based products and monitors for side effects to ensure your safety.
Can prescription weight loss drugs affect memory or mood?
Certain medications may have rare cognitive or mood-related side effects. Dr. Nguyen reviews your medical history, selects the safest options, and tracks your progress closely.
Does insurance cover weight loss treatments at GastroDoxs?
Coverage varies by plan. Our staff will help you verify benefits, obtain pre-authorizations if needed, and minimize out-of-pocket costs.
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