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Proximal Intestinal Mucosal Ablation (PIMA) Type 2 Diabetes, Beyond Another Prescription
An outpatient endoscopic procedure that resets the lining of the upper small intestine, studied for type 2 diabetes and weight. Meet the practices exploring it and choose the ones you want.
Investigational
Proximal intestinal mucosal ablation is investigational in the United States and available through clinical trials.
Free to join. No card required.
What Is PIMA?
The first part of the small intestine, the duodenum, plays an outsized role in how the body handles sugar. In many people with type 2 diabetes its lining appears to change in ways that may add to insulin resistance.
In this procedure a physician passes an endoscope through the mouth, with no incisions, and uses a controlled form of energy to remove the thin inner lining of the duodenum. The lining then grows back, and the aim is for it to send healthier metabolic signals. You may also see it called duodenal mucosal resurfacing.
Conditions It’s Used or Studied For
Type 2 Diabetes
Insulin Resistance
Obesity
Weight Maintenance After GLP-1 Medicines (In Trials)
Only your physician can say whether it is right for you.
Before You Match
What to Know
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It Is Investigational
In the United States this procedure is available through clinical trials, each with its own eligibility rules.
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No Incisions
It is done through an endoscope, typically under sedation, as an outpatient procedure.
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There Is a Diet Afterward
Studies usually include a short liquid or soft diet while the lining heals. Ask what is involved.
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It Is Not Bariatric Surgery
Nothing is removed or rerouted. Ask how it compares with other options you are considering.
More About PIMA
Health e Match summarized this information from the sources listed below. It is general information, not medical advice.
Who Is a Candidate?
In the United States this procedure is available through clinical trials. Studies have enrolled adults with type 2 diabetes that is not well controlled on their current medicines, including some on insulin, and people who have lost weight on a GLP-1 medicine and want to keep it off.
People with prior stomach or intestinal surgery and certain digestive conditions are usually excluded. Each study sets its own criteria.
What to Expect
The procedure is an upper endoscopy done under sedation or anesthesia, typically taking about an hour. A catheter passed through the endoscope lifts the inner lining of the duodenum and then treats it, for example with heat. Nothing is cut through the skin.
Most people go home the same day.
Recovery and Follow-Up
Studies usually include a liquid or soft diet for a couple of weeks while the lining heals, then a gradual return to normal food. Because blood sugar can change quickly, diabetes medicines are often adjusted and glucose is monitored closely.
Follow-up visits and lab tests continue for months to years, depending on the study.
Risks and Side Effects
Commonly reported effects include abdominal pain, nausea and a sore throat from the endoscope. Low blood sugar can occur if diabetes medicines are not reduced. Rare risks include bleeding, a tear in the intestine, and narrowing of the treated area.
Cost and Insurance
The procedure is generally provided through the study. It is not covered by insurance outside of a trial. Ask what the study pays for and what routine care may be billed to you.
Choosing a Practice
Questions worth asking in your first conversation:
- Which study are you enrolling, and who is it for?
- How much experience does your endoscopy team have with this procedure?
- How will my diabetes medicines be managed before and after?
- How long is follow-up?
Alternatives to Consider
Alternatives include diabetes medicines such as metformin, GLP-1 and SGLT2 medicines and insulin; lifestyle programs; endoscopic weight-loss procedures; and metabolic (bariatric) surgery, which can improve type 2 diabetes. Your physician can compare these with a trial.
Sources
Find a Practice That Offers It
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Questions
What Patients Ask
Is PIMA FDA-approved?
No. Proximal intestinal mucosal ablation is investigational in the United States and available through clinical trials.
Who is it being studied for?
Mainly adults with type 2 diabetes, and people trying to keep weight off after GLP-1 medicines. Each study defines who can take part.
Does it replace diabetes medication?
Some studies are exploring whether it can reduce the need for insulin or other medicines. Do not change any medication without your physician.
What should I list on my profile?
Your diagnosis, your current medicines, what you have tried, and that you are exploring endoscopic metabolic procedures.
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This page is general information, not medical advice, and it was last updated October 15, 2026. healthematch.com makes introductions between patients and practices in the United States. It does not provide medical care, does not enroll anyone in clinical research, and does not recommend any particular procedure or provider. Where a practice has documented a therapy’s regulatory status, it is shown exactly as documented. Are you a practice? See the PIMA page for practices.