• Weil Nutrition Corner
  • Meet Dr. Weil
  • Origins
  • Healthy Aging
  • Marketplace
  • Podcasts
  • Accessibility
  • Subscribe
Dr. Weil Logo Dr. Weil Logo Weil™ Andrew Weil, M.D.
  • Health & Wellness
    Health & Wellness
    Body, Mind & Spirit
    • Addiction
    • Allergy & Asthma
    • Autoimmune Disorders
    • Back Pain
    • Bone & Joint
    • Cancer
    • Colds & Flu
    • Dental & Oral
    • Diabetes
    • Disease & Disorders
    • Ears, Nose, & Throat
    • Feet
    • Gastrointestinal
    • Hair, Skin, & Nails
    • Headache
    • Heart
    • Insects & Parasites
    • Liver & Kidney
    • Mental Health
    • Pregnancy & Fertility
    • Respiratory
    • Sexual Health
    • Sleep Issues
    • Stress & Anxiety
    • Vision
    Balanced Living
    • Exercise & Fitness
    • Gardening
    • Healthy Home
    • Healthy Living
    • Meditation & Inspiration
    • Meet Dr. Weil
    • Pets & Pet Care
    • Technology
    • Wellness Therapies
    Health Centers
    • Aging Gracefully
    • Children
    • Condition Care Guide
    • Men
    • Women
  • Diet & Nutrition
    Diet & Nutrition
    Anti-Inflammatory Diet & Pyramid
    Cooking & Cookware
    Diets & Weight Loss
    Food Safety
    Nutrition
    Recipes
  • Vitamins, Supplements & Herbs
    Vitamins, Supplements & Herbs
    Herbs
    Supplements & Remedies
    Vitamins
  • Ask Dr. Weil
  • Blogs
    Blogs
    Bulletins
    Health Tips
    Spontaneous Happiness
  • Mushrooms
  • Sleep
Press "Enter" to search
Dr. Weil Logo Weil™ Andrew Weil, M.D.
  • Health & Wellness
    Health & Wellness
    Body, Mind & Spirit
    • Addiction
    • Allergy & Asthma
    • Autoimmune Disorders
    • Back Pain
    • Bone & Joint
    • Cancer
    • Colds & Flu
    • Dental & Oral
    • Diabetes
    • Disease & Disorders
    • Ears, Nose, & Throat
    • Feet
    • Gastrointestinal
    • Hair, Skin, & Nails
    • Headache
    • Heart
    • Insects & Parasites
    • Liver & Kidney
    • Mental Health
    • Pregnancy & Fertility
    • Respiratory
    • Sexual Health
    • Sleep Issues
    • Stress & Anxiety
    • Vision
    Balanced Living
    • Exercise & Fitness
    • Gardening
    • Healthy Home
    • Healthy Living
    • Meditation & Inspiration
    • Meet Dr. Weil
    • Pets & Pet Care
    • Technology
    • Wellness Therapies
    Health Centers
    • Aging Gracefully
    • Children
    • Condition Care Guide
    • Men
    • Women
  • Diet & Nutrition
    Diet & Nutrition
    Anti-Inflammatory Diet & Pyramid
    Cooking & Cookware
    Diets & Weight Loss
    Food Safety
    Nutrition
    Recipes
  • Vitamins, Supplements & Herbs
    Vitamins, Supplements & Herbs
    Herbs
    Supplements & Remedies
    Vitamins
  • Ask Dr. Weil
  • Blogs
    Blogs
    Bulletins
    Health Tips
    Spontaneous Happiness
  • Mushrooms
  • Sleep
  • Weil Nutrition Corner
  • Meet Dr. Weil
  • Origins
  • Healthy Aging
  • Marketplace
  • Podcasts
  • Accessibility
  1. Home
  2. Diet & Nutrition
  3. Diets & Weight Loss

Implant to Promote Weight Loss?

I understand that the FDA has approved an implant that can help with weight loss. Can you tell me how it works, whether or not it is safe and how much it costs?

Andrew Weil, M.D. | April 17, 2015

Happy mature woman adjusting balance weight scale at health club
2 min

In January, 2015, the Food and Drug Administration (FDA) approved a device called the Maestro system, designed to promote weight loss by generating electrical pulses. These small electrical discharges are intended to help reduce hunger pangs by blocking nerve signals from the brain to the stomach.

The implant was approved for use in adults with a BMI (body mass index) of 35 to 45, considered severely obese (a normal BMI is between 18.5 and 25). In addition, the FDA specified that individuals seeking the device must have tried and failed to lose weight in supervised weight loss programs within the past five years. What’s more, the agency stipulated that candidates for the implant must have at least one obesity-related condition such as type 2 diabetes. However, once the device becomes available, physicians can recommend it to any patient.

The implant consists of electrodes placed just above the stomach and under the skin near the ribcage. The procedure takes 60 to 90 minutes. The electrical stimulation suppresses hunger signals carried by the vagus nerve. The vagus is the body’s longest cranial nerve and stretches from the lower abdomen to the brain stem. It carries signals that regulate digestive processes as well as heart rate and respiration. In addition to suppressing hunger pangs, the implant can signal that the stomach is full sooner than you may normally be aware.

In a trial of the device, 157 obese adults lost 8.5 percent more of their excess weight in the course of a year than patients in a control group who received a sham implant. This result was considered somewhat disappointing since the FDA wanted to see weight loss of 10 percent more than those in the control group. Serious side effects included nausea, pain near the implant site, vomiting and surgical complications. Other undesirable symptoms, including pain, heartburn, problems swallowing, belching, mild nausea and chest pain, were also reported.

The cost of the device to patients isn’t known yet but could run as high as $20,000 to $30,000, in the same ballpark as weight-loss surgery. Whether or not health insurers will cover it is another open question.

The upside of the implant is that – unlike weight loss surgery – it is easily reversible. However, given the scope of the obesity epidemic in the U.S., this new device is unlikely to make a big dent. It may interrupt hunger signals or tell you that you’re full so you’ll stop eating, but it won’t affect overeating or eating behaviors that aren’t related to hunger.

Andrew Weil, M.D.

Source:
EnteroMedics Maestro Rechargeable System – P130019, U.S. Food and Drug Administration, http://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/DeviceApprovalsandClearances/Recently-ApprovedDevices/ucm430696.htm, accessed March 17, 2015

Advertisement
Related Weil Products

Dr. Weil on Healthy Aging for Healthy Eating

Dr. Weil on Healthy Aging for Nutrition – Want to change your diet? The Dr. Weil on Healthy Aging online guide is your anti-inflammatory diet headquarters. Start your free trial and get access to an exclusive version of Dr. Weil’s Anti-Inflammatory Food Pyramid, hundreds of recipes, eating guides, and more.
Get Started
Dr. Weil on Healthy Aging

Start Your 14-Day Free Trial

Free Newsletters

Stay Connected With Dr. Weil

Anti-Inflammatory Diet

Follow Dr. Weil’s Food Pyramid

Get Dr Weils Newsletter Updates

Exclusive Lifestyle, Nutrition & Health Advice

Dr. Weil's FREE health living advice delivered to you!

By clicking "Subscribe," you agree to the DrWeil.com Terms and Conditions and Privacy Policy. You also agree to receive emails from DrWeil.com, and you may opt out of DrWeil.com subscriptions at any time.

Trending Now

An athlete is riding a bicycle on road. The man is wearing black bike shorts and shin guards along with a red sleeveless top and a red and white helmet and sunglasses. The image is blurred in motion.
Diets & Weight Loss

7-Keto: Supplement to Speed Metabolism?

A Flexitarian Diet | Diets & Weight Loss | Andrew Weil, M.D.
Diets & Weight Loss

A Flexitarian Diet

A Green Mediterranean Diet? | Diets & Weight Loss | Andrew Weil, M.D.
Diets & Weight Loss

A Green Mediterranean Diet?

Does Weight Loss Prevent Breast Cancer? |Women | Andrew Weil, M.D.
Diets & Weight Loss

A Hormone to Promote Weight Loss?

Dr. Weil Logo Weil™ Andrew Weil, M.D.
Dr. Weil's Signature

Exclusive Lifestyle, Nutrition & Health Advice

  • About Us
  • Press Information
  • Advertising
  • Contact Us
  • Terms of Use
  • Privacy Policy
  • Accessibility

Terms of Use | Privacy Policy

Information on this website is provided for informational purposes only and is not intended as a substitute for the advice provided by your physician or other healthcare professional. You should not use the information on this website for diagnosing or treating a health problem or disease, or prescribing any medication or other treatment. Any third party offering or advertising on this website does not constitute an endorsement by Andrew Weil, M.D. or Healthy Lifestyle Brands.

© Copyright 2025 Healthy Lifestyle Brands, LLC. All rights reserved. Reproduction in whole or in part without permission is prohibited. www.drweil.com