Experimental implant converts blood sugar to treat diabetes and obesity, mouse study shows

The wireless, smartphone-controlled device reduced blood sugar and promoted weight loss in mice, offering a potential new approach to treating metabolic conditions.

By LineZotpaper AI staff

Published27 October 2026

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Illustration: Experimental implant converts blood sugar to treat diabetes and obesity, mouse study shows

An experimental medical implant that removes excess sugar from the blood using a wireless, smartphone-controlled chemical reaction has shown promise in treating type 2 diabetes and obesity in lab mice, according to a study published Oct. 22 in the journal Science.

Researchers at ETH Zurich designed the inch-long device, which uses a gold and platinum nanoparticle-coated electrode to convert glucose into gluconate, a harmless byproduct. The reaction is powered by low-level radio frequency energy from a smartphone, which also receives real-time blood sugar data from a continuous glucose monitor. The system automatically adjusts the amount of glucose removed, switching on when levels rise and off when they return to a safe range.

In a six-week study, mice with both diabetes and obesity that received the implant showed more stable blood sugar levels and lost an average of 10 percent of their body weight. The on-off regulation prevented blood sugar from dropping too low, and the body's metabolism shifted toward burning fat.

"The objective is to create an autonomous system that continuously adapts to the patient's metabolic needs," study co-author Martin Fussenegger, a professor of biotechnology and bioengineering at ETH Zurich, told Live Science.

The team also tested the device in a 5-liter beaker of sugar solution, similar in volume to a person's total blood, and found it effectively controlled sugar levels. However, Fussenegger stressed that the tests are not a substitute for research in larger animals and humans, which are the next priority. He also noted that the device is not intended to replace healthy nutrition or exercise but could become "a potentially powerful addition to the therapeutic toolbox."

About 790 million people have type 2 diabetes globally, and over 1 billion have obesity. Current treatments include lifestyle changes and medications such as metformin and GLP-1 drugs.

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Analysis

Why This Matters

Nearly 790 million people worldwide have type 2 diabetes and over 1 billion have obesity, conditions that often coexist and are difficult to manage.
Current treatments rely on lifestyle changes or long-term medications like metformin and GLP-1s; the implant offers a potential drug-free alternative that directly targets blood glucose.
If proven safe and effective in humans, the device could provide an autonomous, continuously adapting therapy.

Background

The implant, developed by researchers at ETH Zurich, consists of an inch-long reactor coated with gold and platinum nanoparticles. When activated by low-level radio frequency energy from a smartphone, it converts glucose into a harmless byproduct called gluconate. A continuous glucose monitor tracks blood sugar and sends feedback to the phone, which adjusts the power to the implant, creating a closed-loop system.

In a mouse study over six weeks, animals with the implant had more stable blood sugar and lost an average of 10% of their body weight, as the on-off regulation prevented sugar levels from falling below safe limits.

What to Watch

The team's next steps: testing the device in larger animals and eventually humans to demonstrate safety and efficacy at human scale.
The challenge of scaling up the chemical reaction to handle the glucose load of a human patient, though preliminary tests in a 5-liter sugar solution showed promise.

Sources

Scientists invent implant that can transform sugar in the blood to treat type 2 diabetes · Live Science

Checked

12 claims in this story checked against 1 source: 10 supported.

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SupportedThe experimental implant converts blood sugar and has shown promise for treating diabetes and obesity in mice.Latest from Live Science: “An experimental medical implant that removes excess sugar from the blood has shown promise in treating diabetes and obesity in tests with lab mice.”
Partly supportedThe summary says the device reduced blood sugar in mice.Latest from Live Science: “Over six weeks, the mice fitted with the implant had much more stable blood sugar levels than the untreated mice did.”
SupportedThe device was wireless and smartphone-controlled, and mice with the implant lost an average of 10% of their body weight over six weeks.Latest from Live Science: “The device is wireless and is both powered and controlled from an ordinary smartphone. [...] Over six weeks, the mice fitted with the implant had much more stable blood sugar levels than the untreated mice did. They also lost an average of 10% of their body weight.”
SupportedThe study was published Oct. 22 in Science.Latest from Live Science: “The implant, described Oct. 22 in the journal Science”
SupportedResearchers at ETH Zurich designed an inch-long device that converts glucose into harmless gluconate using an electrode coated with gold and platinum nanoparticles.Latest from Live Science: “They designed an inch-long reactor that converts glucose into a harmless byproduct, called gluconate, through a controlled chemical reaction triggered by tiny amounts of electricity. This transformation takes place at an electrode coated with gold and platinum nanoparticles”
SupportedA smartphone supplies low-level radio-frequency energy to power the implant, and receives blood-sugar feedback from the glucose monitor.Latest from Live Science: “The phone emits low-level radio frequency energy, which the implant's electronics then convert to a stable DC current to activate the reaction. Combined with a glucose monitor, the device detects high blood sugar and then sends feedback to the smartphone”
Partly supportedThe system automatically switches glucose removal on when sugar rises and off when it returns to a safe range.Latest from Live Science: “In principle, this enables the device to remove more glucose when [blood sugar] levels are elevated and reduce its activity when glucose returns towards the desired range”
SupportedThe implant prevented blood sugar from dropping below safe limits, while the mice’s metabolism shifted toward fat burning.Latest from Live Science: “Because the mice's glucose was consistently maintained within normal levels, the body's metabolic chemistry shifted toward fat burning, while the on-off regulation of the glucose-removal reaction prevented the mice's sugar levels from falling below safe limits.”
SupportedFussenegger said, “The objective is to create an autonomous system that continuously adapts to the patient's metabolic needs.”Latest from Live Science: ““The objective is to create an autonomous system that continuously adapts to the patient's metabolic needs.””
SupportedThe team tested the device in a 5-liter beaker of sugar solution, a volume similar to a person's total blood volume, and it effectively controlled sugar levels.Latest from Live Science: “The amount, about 1.3 gallons (5 liters), was similar to a person's total blood volume. The device still effectively controlled sugar levels in this larger system.”
SupportedFussenegger said the beaker test was not a substitute for research in larger animals and humans, which are the team's next priority.Latest from Live Science: “The test is not a substitute for research in larger animals and human patients, though, Fussenegger said. Those studies are the team's next priority.”
SupportedFussenegger said the device was not intended to replace healthy nutrition or exercise and could be a potentially powerful addition to the therapeutic toolbox.Latest from Live Science: ““our device is not intended to replace healthy nutrition, physical activity, or preventative medicine” [...] “We see it as a potentially powerful addition to the therapeutic toolbox”