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#1 Weight Loss Surgery Mexico
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⚕️ The Gold-Standard Bypass Procedure

Gastric Bypass Surgery in Mexico — From $6,000, ~70% Excess Weight Loss

Roux-en-Y and Mini Gastric Bypass performed by board-certified surgeons led by Dr. Alejandro López. 20,000+ procedures, 2-day hospital monitoring, and an all-inclusive package — at a fraction of US/Canadian prices.

From $6,000 Roux-en-Y & Mini Bypass 2-Day Hospital Stay All-Inclusive Package
📚 Published in Obesity Surgery (2026)View publications →
~70%
Excess weight loss in 12 months
2 days
Inpatient hospital monitoring
20,000+
Procedures by Dr. López's team
From $6,000
All-inclusive (flights excluded)

What Is Gastric Bypass Surgery?

Gastric bypass (Roux-en-Y) creates a small stomach pouch and reroutes a portion of the small intestine. The result: you eat less, absorb fewer calories, and the gut hormones that drive hunger and blood sugar shift dramatically — with improvements in metabolic markers often visible within the first weeks.

Performed laparoscopically through 4–5 small incisions, the surgery takes ~90 minutes. We add staple-line suturing for additional safety beyond standard bypass technique.

  • Restrictive + malabsorptive — strongest weight-loss mechanism
  • Excellent for severe obesity (BMI 40+) and metabolic disease
  • May significantly improve metabolic health (results vary by patient)
  • Permanent reconfiguration — durable long-term results
Gastric Bypass Surgery in Mexico

Gastric Bypass or Gastric Sleeve — Which Is Right For You?

Both are gold-standard bariatric procedures. Here's how they compare so you can discuss the best fit with our surgical team.

FactorGastric SleeveGastric Bypass
MechanismRestrictive (smaller stomach)Restrictive + malabsorptive
Excess weight loss (1 yr)~60–65%~70%
improvement in metabolic health~60%~80%
GERD/refluxCan worsenOften improves
Hospital stay1–2 days2 days
ReversibleNo (stomach removed)Reversible / convertible
Best forBMI 30–45, simpler recoveryBMI 40+, diabetes, severe GERD
Starting price (Mexico)From $4,500From $6,000

Is Gastric Bypass Right For You?

Bypass is the strongest bariatric option for severe obesity, metabolic disease, and patients who haven't succeeded with other approaches.

Ideal Candidates

  • BMI of 40+ (or 35+ with obesity-related conditions)
  • Type 2 diabetes — many patients experience significant improvement (results vary by patient)
  • Severe acid reflux / GERD
  • Failed previous diet, exercise, or treatment attempts
  • Plateaued or regained weight after gastric sleeve
  • Adults 18–65 in generally stable health

⚠️Not Recommended If

  • BMI under 30 — sleeve or non-surgical options likely better
  • Active substance abuse or unmanaged eating disorder
  • Severe heart, lung, or kidney disease
  • Pregnancy, or planning pregnancy in the next 18 months
  • Unable to commit to lifelong nutritional requirements

Roux-en-Y vs Mini Gastric Bypass

Both produce excellent results. The choice depends on your medical history and surgical goals.

Gold Standard · 1 hour 30 min

Roux-en-Y Gastric Bypass

The classic procedure: small stomach pouch + Y-shaped intestinal rerouting. Most studied bariatric surgery in the world with 50+ years of long-term data.

From $6,600 USD all-inclusive
  • ~70% excess weight loss at 1 year
  • ~80% type 2 improvement in metabolic health
  • Best for severe GERD / acid reflux
  • Reversible / revisable in the future
Newer Technique · 1 hour

Mini Gastric Bypass (One-Anastomosis)

A simpler one-loop variation. Shorter operating time, fewer connection points, slightly faster recovery — with comparable weight-loss outcomes.

From $5,800 USD all-inclusive
  • ~70% excess weight loss at 1 year
  • Shorter surgery time (~1 hour)
  • Simpler reconnection — fewer technical risks
  • Easier to revise if needed

Bypass Pricing in Mexico

Prices include hospital, surgeon, anesthesia, hotel, and ground transport. Flights are excluded.

ProcedureFrom (USD)
Gastric Bypass — Tijuana$5,900
Gastric Bypass — Guadalajara$6,600
Gastric Bypass — Puerto Vallarta$6,600
Mini Gastric BypassFrom $5,900
Bypass Revision SurgeryFrom $6,700

* Prices may vary based on individual evaluation. Financing available.

What's Included When You Book

🏥Hospital stay (2 nights) & private room
👨‍⚕️Surgeon, anesthesia & medical team
🩺Pre-op labs & EKG
💊Post-op treatments
🏨Hotel stay near hospital
🚗All ground transport (airport ↔ hotel ↔ hospital)
📋Nutrition plan & vitamin schedule
📞30-day follow-up & lifetime support

Step-by-Step — From Consultation to Recovery

1
Step 1

Free Online Consultation

Talk with a patient coordinator, share your medical history, and review surgical options. No commitment.

2
Step 2

Medical Approval & Date Booking

Complete a medical questionnaire and lab review. Approved patients pick a surgery date and location (Tijuana, Guadalajara, or Vallarta).

3
Step 3

Travel & Arrival

Fly into your chosen city. Driver pickup at airport, transfer to hotel near the hospital. Bilingual support throughout.

4
Step 4

Pre-Op Day

Lab work, EKG, and one-on-one consultation with Dr. López to finalize the plan and answer questions.

5
Step 5

Surgery Day

Laparoscopic gastric bypass at an accredited hospital. ~90-minute procedure under general anesthesia.

6
Step 6

2-Day Hospital Recovery

Inpatient monitoring with ICU-level nursing. Walking same day. Liquid diet starts the day after surgery.

7
Step 7

Hotel Recovery + Flight Home

1–2 days at the hotel under continued team supervision. Driver back to the airport when cleared. Most patients fly home day 5–7.

8
Step 8

30-Day Follow-Up & Lifetime Support

Phone check-ins, nutrition guidance, vitamin schedule. We support you long-term.

What Recovery Looks Like

Most patients return to desk work in 2 weeks and full activity in 4–6 weeks. Here's a week-by-week roadmap.

Week 1

Liquid Diet

Clear liquids, then full liquids. Sip slowly. Walk daily. No heavy lifting. Driver returns you to the airport.

Week 2–3

Pureed Foods

Pureed proteins, soft eggs, yogurt. Most patients return to desk-job work. Light activity.

Week 4–6

Soft Foods

Soft proteins, vegetables, soft fruits. Resume most activities. Begin gentle strength training.

Week 6+

Solid Foods & Full Activity

Full diet of solid foods (small portions). Return to gym, full work, travel. Lifetime vitamin supplementation begins.

Dr. Alejandro López

Dr. Alejandro López — Medical Director

20 Years · 20,000+ Bariatric Procedures

Dr. López trained at the University of Guadalajara and completed bariatric fellowship at Cook County Hospital in Chicago. He personally performs every gastric bypass at our Tijuana, Guadalajara, and Vallarta locations — using staple-line suturing for added safety beyond standard bypass technique.

“Seeing my patients happy with the results of my work — it will always be the goal of my life.”
Learn More About Dr. López

Bypass Patients — Before & After

Patients from across the US and Canada share their journey after Roux-en-Y or Mini Gastric Bypass with Dr. López's team.

“I had a sleeve 8 years ago and regained 40 lb. Dr. López performed a revision to bypass and my reflux improved significantly on top of the weight loss. Down 65 lb at 9 months — and my blood sugar levels improved to a healthy range.”

— Rachel T., Phoenix, AZ (Verified Patient)
Gastric Bypass Before and After

Bypass Patient Reviews

★★★★★

“Dr. López performed my Roux-en-Y in Tijuana. Significant improvement in blood-sugar control within weeks. Down 55 lb in 6 months. Best decision of my life.”

— Brian K., Dallas, TX
★★★★★

“Mini bypass in Guadalajara. The 2-day hospital stay was reassuring — fully monitored, world-class care. Recovery was easier than expected.”

— Linda P., Chicago, IL
★★★★★

“Flew direct from Calgary to Vallarta. Combined surgery with a beachfront recovery. The medical team was outstanding — and the price was 1/3 of Canada.”

— Janet R., Calgary, AB
★★★★★

“Sleeve-to-bypass revision after I regained weight. Dr. López caught GERD issues I didn't even know were progressing. 70 lb down at one year.”

— Sandra M., Houston, TX

Frequently Asked Questions

Is gastric bypass safe in Mexico? +
Yes. We perform bypass at Accredited- and COFEPRIS-accredited private hospitals (Hospital Puerta de Hierro is part of the Mayo Clinic Care Network). Dr. López's team has performed 20,000+ bariatric procedures with complication rates equal to or below US averages.
How much weight will I lose with bypass? +
Most patients lose ~70% of their excess weight in the first 12 months. Long-term studies show patients maintain 50–60% excess weight loss at 5–10 years. Bypass also may significantly improve type 2 diabetes — many patients experience improvement (results vary by patient) and improves GERD, sleep apnea, and high blood pressure.
Is gastric bypass reversible? +
Roux-en-Y bypass is technically reversible — the rerouted intestine can be reconnected. In practice, reversal is rare and only done for serious complications. The mini bypass is also reversible / convertible.
How long is the hospital stay? +
2 days inpatient (1 night before surgery for prep, surgery day, then 1 night post-op monitoring). After hospital discharge, you stay 1–2 days at the hotel under continued team supervision before flying home.
When can I fly home? +
Most patients fly home 5–7 days after surgery. We monitor your recovery at the hotel for 1–2 days after hospital discharge before clearing you for the flight.
Will I need to take vitamins forever? +
Yes. Because bypass reduces nutrient absorption, you'll need a daily multivitamin, calcium, vitamin D, vitamin B12, and iron — for life. We provide a complete schedule and follow-up guidance.
Can I have a bypass if I had a gastric sleeve before? +
Yes — sleeve-to-bypass revision is one of our most common procedures. It's the standard solution for patients who regained weight after sleeve or developed severe acid reflux. Pricing starts at $7,000 for revision.
Does insurance cover bariatric surgery in Mexico? +
Most US insurance plans don't cover surgery performed outside the US. However, our all-inclusive prices ($6,000–$6,600) are typically lower than the deductible-plus-copay you'd pay even with US insurance. Financing options are available.

Ready to Transform Your Life?

Free consultation. Personalized surgical plan. Same Dr. López who performs at Mayo-affiliated hospitals — at a fraction of the US/Canada cost.

Gastric Bypass Across Mexico

ALO Bariatrics performs gastric bypass surgery in 3 cities in Mexico, with U.S. board-certified surgeons and JCI-accredited hospitals.

Bariatric Surgery vs Weight-Loss Injections

Dr. Alejandro López is a bariatric surgeon with over 250 citations in peer-reviewed medical research, reflecting a strong commitment to evidence-based patient care.

View Publications →