Am I a Candidate for Bariatric Surgery?

This is usually the first real question, and it deserves a straight answer rather than a lead-capture quiz. Bariatric surgery has been guided for decades by published clinical criteria, and most programs work from some version of them. Here is that framework, what the evaluation process actually involves, and — the section most sites omit — the honest reasons some people should not have this surgery, or should not have it yet.

The long-standing framework, established through consensus guidelines and used widely for decades, considers surgery for adults whose body mass index falls at or above 40, or at or above 35 when accompanied by significant obesity-related conditions such as type 2 diabetes, obstructive sleep apnea, hypertension, or serious joint disease.

More recent guidance from major bariatric and metabolic surgery societies has moved toward broader criteria, including consideration at lower thresholds for some patients — particularly where metabolic disease is present, and with adjusted thresholds recognized for certain populations. Practice varies between programs and countries.

Beyond the numeric criteria, most legitimate programs look for:

• A documented history of prior weight-management efforts. Not as a test of willpower — as clinical context.
• Medical stability sufficient to undergo general anesthesia and abdominal surgery, with any significant cardiac, pulmonary, or other conditions evaluated and managed.
• Psychological readiness — assessed formally, and covering understanding of the permanence, capacity to follow post-operative protocols, and screening for factors that predict difficulty afterward.
• Nutritional understanding and commitment — particularly around lifelong supplementation, which is not negotiable after bypass and matters after sleeve.
• Smoking cessation. Most programs require it well in advance; it materially raises complication and ulcer risk.
• Understanding that follow-up is lifelong. Programs increasingly screen for whether an international patient has a realistic plan for this. So should you — see life after surgery.

A proper bariatric workup is extensive, and its extensiveness is the point. Expect some combination of:

• Comprehensive bloodwork, including nutritional and metabolic panels
• Upper endoscopy in many programs — particularly relevant for reflux, and standard before revisions
• Cardiac and pulmonary evaluation as indicated by your history
• Sleep study or sleep apnea screening where relevant
• Consultation with a bariatric dietitian
• Psychological evaluation
• Imaging as indicated

The section other sites skip. Surgery may be inappropriate, or inappropriate right now, when:

• Medical conditions are unstable — recent cardiac events, uncontrolled cardiac or pulmonary disease, or active cancer treatment, absent explicit specialist clearance.
• Active, untreated substance use disorder is present. This is a genuine contraindication in most programs, and it is also an area where bariatric surgery introduces specific long-term risks, including changes in alcohol metabolism and documented risk of new substance problems after surgery. If this is part of your picture, address it first — Colombia Rehab covers treatment options.
• Untreated or unstable eating disorders or significant psychiatric instability — not disqualifying forever, but requiring treatment first. Surgery does not resolve these and can complicate them.
• You cannot commit to lifelong follow-up and supplementation — particularly for bypass, where the consequences of not doing so are serious.
• You are being pressured — by a partner, a family member, or a clinic's sales process. This decision has to be yours.
• You expect surgery to resolve non-weight problems. It changes a great deal. It does not repair relationships, careers, or self-worth, and patients who expect it to are the ones who struggle most afterward.
• You cannot take the time. The in-country recovery window is not padding; leaving early is the risk you cannot buy back.

Traveling for bariatric surgery adds requirements that domestic patients do not face, and honest programs raise them before you book:

• A continuity-of-care plan at home. Who monitors your labs? Who sees you if something surfaces at month eight? Arrange this before you travel — ideally with a primary care physician or bariatric program at home who has agreed in advance. This is the single most common gap in international bariatric care.
• A realistic recovery window, since flying too early after abdominal surgery carries real clot and complication risk.
• Records in English — particularly your operative report, which every future clinician will need.
• Complication coverage, since standard travel insurance typically excludes complications of planned procedures.

Our companion site Colombia Medical Guide walks the full trip-planning sequence stage by stage if you want the general framework alongside this vertical's specifics.