SADI-S Surgery in Mexico (Cancún): Who It's For

01 · What it is

Sleeve, bypass and chemistry, in one operation. Three mechanisms, one connection.

~80% of stomach resected

SADI-S (Single Anastomosis Duodeno-Ileal Bypass with Sleeve) consists of a vertical sleeve gastrectomy — laparoscopic resection of approximately 75–80% of the stomach — plus a single anastomosis between the duodenum (just past the pylorus) and a loop of ileum.

It is a modern procedure that emerged from the duodenal switch — a simplification of the classic biliopancreatic diversion with duodenal switch (BPD-DS), using a single surgical join instead of two — and it combines the beneficial effects of the gastric sleeve and the duodenal switch in one operation. The pylorus is preserved, which reduces the risk of dumping syndrome compared to classic bypass.

It combines three mechanisms: restriction (sleeve), intestinal malabsorption (duodeno-ileal bypass), and hormonal effect on satiety and glucose. That's why it is the most metabolically potent bariatric procedure available — and why it requires lifelong nutritional supplementation (ASMBS Position Statement 2020).

02 · Who it's for

For severe cases. And for patients who accept the lifelong protocol.

SADIs isn’t my first-line option for standard cases. I reserve it for very high BMI, severe type 2 diabetes, or as a second stage when a prior sleeve fell short. Every case gets evaluated one by one — I see patients from all over Mexico and abroad, and your first assessment can happen online.

45–50+

BMI above 45–50 with comorbidities

I don't use a strict BMI cutoff. The profile is a BMI above 45–50 together with comorbidities associated with hard-to-control obesity — typically conditions that need multiple medications — where weight loss has to be more aggressive than what sleeve or classic bypass can offer. ASMBS endorses SADI-S for this severe-obesity profile (Position Statement 2020).

T2D

Severe type 2 diabetes

Diabetes especially with poor control. SADIs shows high metabolic remission rates in available literature (ASMBS Position Statement 2020).

2ª

Second stage after sleeve

Patients with insufficient response to a primary sleeve gastrectomy, where additional weight loss or stronger metabolic effect is needed.

Contraindications to discuss: small-bowel inflammatory bowel disease, history of severe nutritional deficiencies, plans of pregnancy in the next 18–24 months, or unwillingness to commit to lifelong follow-up with supplementation.

When SADI-S is the wrong operation

I tell patients no more often on SADI-S than on any other procedure. It's the wrong operation if a sleeve or bypass can already get you to goal — more surgery than you need is not better surgery. It's the wrong operation if lifelong daily supplementation and lab work every 6 to 12 months isn't realistic for you — I'll tell you, and we'll talk about a different one. Significant untreated GERD also changes the conversation: the sleeve component can worsen reflux, which usually points toward a bypass instead. And if you're looking for the "strongest" surgery as a shortcut: the strongest tool is the one matched to your case. That's the whole point of an assessment.

If a previous sleeve fell short, that's its own conversation — I wrote a full guide: failed gastric sleeve: revision options in Mexico.

Two questions to ask any surgeon — me included

Not every bariatric surgeon performs SADI-S routinely — it takes specific, hands-on experience with malabsorptive technique. So ask: are you board-certified (in Mexico the board is CMCOEM — my certification is CB240071, and my specialty license CE 14247260 is verifiable in the SEP public registry), and how often do you perform this specific operation? If you're traveling — from the US or from another city in Mexico — the trip is the easy part: your first assessment happens over WhatsApp, and I wrote the full stay timeline in how long to stay in Cancún after bariatric surgery.

03 · The procedure

From first consult to discharge. What happens, step by step.

~120–180 minutes in the OR · 2–3 nights in hospital

01

Pre-operative evaluation

Cardiology and anesthesia evaluation, nutritional assessment with a clinical nutritionist, psychological evaluation with bariatric psychology, and specific informed consent documenting the lifelong nutritional supplementation requirement.

02

Surgery day

Laparoscopic operation under general anesthesia. Resection of 75–80% of the stomach in vertical sleeve, followed by creation of a single anastomosis between the duodenum and a loop of ileum. Approximate operative time: 120–180 minutes.

03

Hospital recovery

2–3 nights in hospital. Early ambulation within 24 hours. Start of clear-liquid diet under supervision. Daily medical visit until discharge.

04

Post-surgical stay

If you're from outside Cancún, 3 additional days are recommended before flying home. Hotel near the hospital, WhatsApp follow-up and fluid monitoring.

05

Dietary protocol and supplementation

Typical progression: clear liquids → full liquids → puree → soft diet → solid diet over approximately 6 weeks. Immediate start of nutritional supplementation (vitamins A, D, E, K, B12, iron, calcium, copper, zinc) — for life.

06

Lifelong follow-up

In-person or virtual visits at month 1, 3, 6, and 12. Laboratory monitoring every 6–12 months to watch for nutritional deficiencies (more frequent than with RYGB or sleeve). Follow-up is lifelong — not optional.

04 · Outcomes

The one that drops the most weight. The one that asks the most.

SADIs shows the strongest weight-loss and metabolic-remission results among available bariatric procedures, especially in super obesity. But the real outcome depends on adherence to supplementation and follow-up.

80–90_%

Excess weight loss at 2–3 years

Range reported in available literature (Spinos et al., systematic review and meta-analysis, Obesity Surgery 2022; ASMBS Position Statement on SADI-S 2020). Superior to RYGB and sleeve in total loss, especially in super obesity.

60–90_%

Type 2 diabetes remission

Rate reported in available literature (ASMBS Position Statement on SADI-S 2020). Among the highest across bariatric procedures for severe metabolic cases.

∞

Lifelong supplementation

Vitamins A, D, E, K, B12, iron, calcium, copper, and zinc — permanent, with laboratory monitoring every 6–12 months. Deficiencies are more common than with RYGB or sleeve.

Sources: ASMBS Position Statement on Single-Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S), Surgery for Obesity and Related Diseases, 2020; Spinos et al., systematic review and meta-analysis, Obesity Surgery 2022.

05 · Cost

I don't publish prices. Here's why.

Each case has a different risk profile, hospital choice, length of stay, and follow-up program. Publishing a single number would be dishonest — it would either undersell complex cases or overprice simple ones. A quote issued before anyone knows your case isn't an evaluation; it's an invoice.

WhatsApp me your weight, height, and any medical conditions. I respond personally, normally within 24 hours: whether you're a candidate and what the next step is. Exact costs and hospital are discussed at your assessment, with financing options if you need them.

Have your case assessed on WhatsApp →

06 · SADIs vs Bypass

SADIs or bypass? Depends on how severe and how disciplined.

Want the full picture across all four surgeries (sleeve, bypass, mini bypass, and SADI-S)? It’s in the blog’s comparison guide. Here, the head-to-head:

SADIs · This page

When SADIs wins

BMI above 45–50 with hard-to-control comorbidities, where weight loss needs to be more aggressive.
Severe type 2 diabetes with poor control on prior RYGB or insufficient response.
Second stage after sleeve gastrectomy with insufficient response.
You accept lifelong nutritional follow-up (supplementation A, D, E, K, B12, iron, calcium).

Gastric Bypass

When bypass wins

Lower BMI without hard-to-control comorbidities — RYGB is usually sufficient for the desired outcome.
You don't want SADIs' more intensive supplementation regimen.
Stronger 10+ year evidence — RYGB is the most studied bariatric procedure.
History of nutritional deficiencies or elevated risk of non-adherence to follow-up.

Ask me about Gastric Bypass on WhatsApp →

07 · Frequently asked

Your questions deserve honest answers.

What does SADI-S stand for?

SADI-S stands for Single Anastomosis Duodeno-Ileal Bypass with Sleeve: a gastric sleeve plus a duodeno-ileal bypass built with one connection. I remove 75–80% of the stomach laparoscopically and connect the duodenum directly to a loop of ileum, keeping the pylorus in place. It’s the strongest metabolic procedure in bariatric surgery, endorsed by the ASMBS (Position Statement, 2020).

Why SADIs and not bypass?

SADIs combines a sleeve gastrectomy with a single-anastomosis duodeno-ileal bypass. It has stronger restrictive, malabsorptive, and hormonal effects than RYGB or sleeve alone — that's why it is indicated for severe obesity — a BMI above 45–50 with hard-to-control comorbidities — and severe type 2 diabetes. ASMBS recognizes it as an accepted procedure (ASMBS Position Statement on SADI-S, 2020).

How much will I actually lose?

~80–90% of excess weight at 2–3 years in published studies (Spinos et al., systematic review and meta-analysis, Obesity Surgery 2022; ASMBS Position Statement 2020). Results are superior to RYGB and sleeve in total loss, especially in super obesity. Your outcome depends on adherence and your specific case.

Do I really take vitamins forever?

Yes. SADIs requires lifelong nutritional supplementation (vitamins A, D, E, K, B12, iron, calcium, copper, zinc) and laboratory monitoring every 6–12 months. It is a real commitment — we discuss it in detail in consultation before deciding. If you are not willing to commit to follow-up, an option with a less intensive regimen (RYGB or sleeve) may be more appropriate.

How much will it cost?

Varies by hospital (Joya, Amerimed, or Galenia), length of stay, and follow-up program. I don't publish a single number because it would be dishonest — it would either undersell complex cases or overprice simple ones. WhatsApp me and I answer personally, normally within 24 hours; the exact cost of your case is discussed at your assessment, along with financing options if you need them.

When do I get my normal life back?

2–3 nights in hospital. Ambulation within 24 hours. Liquid → soft → solid diet over approximately 6 weeks. Return to office work typically in 2–3 weeks. WhatsApp open from the moment you wake up in recovery.

What BMI do you need for SADI-S in Mexico?

I don't use a strict BMI cutoff. Most SADI-S patients have a BMI above 45–50 together with comorbidities associated with hard-to-control obesity — conditions that typically need multiple medications — or type 2 diabetes that medication struggles to control. Below that profile, a sleeve or bypass usually fits better; your assessment confirms it.

Can SADI-S fix a failed gastric sleeve?

Often, yes — it's one of the main revision options after a sleeve, because it keeps your sleeve and adds the intestinal component. Whether it's the right revision for you depends on why the sleeve fell short.

Is it safe to travel to Mexico for SADI-S?

The honest answer has less to do with the country and more with the surgeon: board certification, experience with this specific operation, and who answers your messages after surgery. I answer mine personally — normally within 24 hours.

SADI-S
in Mexico (Cancún).

Sleeve, bypass and chemistry, in one operation. Three mechanisms, one connection.

For severe cases. And for patients who accept the lifelong protocol.

BMI above 45–50 with comorbidities

Severe type 2 diabetes

Second stage after sleeve

When SADI-S is the wrong operation

Two questions to ask any surgeon — me included

From first consult to discharge. What happens, step by step.

Pre-operative evaluation

Surgery day

Hospital recovery

Post-surgical stay

Dietary protocol and supplementation

Lifelong follow-up

The one that drops the most weight. The one that asks the most.

Excess weight loss at 2–3 years

Type 2 diabetes remission

Lifelong supplementation

I don't publish prices. Here's why.

SADIs or bypass? Depends on how severe and how disciplined.

When SADIs wins

When bypass wins

Your questions deserve honest answers.

SADIs is a lifelong commitment. You accept it, I operate. If not, I tell you.

SADI-Sin Mexico (Cancún).

Sleeve, bypass and chemistry, in one operation. Three mechanisms, one connection.

For severe cases. And for patients who accept the lifelong protocol.

BMI above 45–50 with comorbidities

Severe type 2 diabetes

Second stage after sleeve

When SADI-S is the wrong operation

Two questions to ask any surgeon — me included

From first consult to discharge. What happens, step by step.

Pre-operative evaluation

Surgery day

Hospital recovery

Post-surgical stay

Dietary protocol and supplementation

Lifelong follow-up

The one that drops the most weight. The one that asks the most.

Excess weight loss at 2–3 years

Type 2 diabetes remission

Lifelong supplementation

I don't publish prices. Here's why.

SADIs or bypass? Depends on how severe and how disciplined.

When SADIs wins

When bypass wins

Your questions deserve honest answers.

SADIs is a lifelong commitment. You accept it, I operate. If not, I tell you.

SADI-S
in Mexico (Cancún).