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Diabetes, a condition affecting approximately 425 million individuals worldwide, has traditionally required daily injections for many, making the discovery of a new, needle-free insulin method a significant breakthrough.

This innovation promises to transform the lives of the roughly 75 million people who currently inject insulin daily.


  • Innovative Delivery Method: Researchers have developed an orally administered insulin encapsulated within nano-carriers, revolutionizing how insulin can be delivered to the body. This method allows insulin to be ingested via a capsule or even incorporated into a piece of chocolate, offering a more patient-friendly alternative to injections.
  • Nano-Technology: The insulin is encased in nano-carriers, tiny particles one-tenth the width of a human hair, making them invisible under a normal microscope. This cutting-edge technology ensures precise delivery of insulin to the body’s required areas, enhancing efficacy and reducing side effects.
  • Enhanced Precision and Safety: According to Professor Peter McCourt from UiT Norway’s Arctic University, this new method delivers insulin more accurately to where it’s needed, minimizing the risk of unwanted side effects associated with traditional injection methods.
  • Protection Against Digestive Breakdown: A significant challenge overcome by researchers is protecting insulin from breaking down in the stomach. A special coating ensures the insulin remains intact until it reaches its target destination, primarily the liver, where it’s then released in response to blood sugar levels.
  • Reduced Side Effects and Improved Patient Experience: This oral insulin mimics the body’s natural insulin process more closely, resulting in fewer side effects. It also eliminates the need for refrigeration and makes diabetes management more discreet and convenient.
  • Successful Preclinical Trials: The oral insulin has been tested on nematodes, mice, rats, and baboons, showing promising results. It’s particularly noteworthy that the medication has been tested in sugar-free chocolate form, making it palatable for test subjects.


The development of oral insulin represents a monumental leap forward in diabetes care, offering a needle-free, more natural, and potentially safer method of insulin delivery. With human trials set to begin in 2025, the future of diabetes management looks promising.

This innovative approach not only aims to improve the quality of life for millions of diabetes patients but also marks a significant advancement in the application of nanotechnology in medicine.

As we await the results of human clinical trials, the potential for this new insulin method to replace traditional injections offers hope for a less invasive and more effective diabetes management solution.

Journal Reference:

  1. Nicholas J. Hunt, Glen P. Lockwood, Scott J. Heffernan, Jarryd Daymond, Meng Ngu, Ramesh K. Narayanan, Lara J. Westwood, Biswaranjan Mohanty, Lars Esser, Charlotte C. Williams, Zdenka Kuncic, Peter A. G. McCourt, David G. Le Couteur, Victoria C. Cogger. Oral nanotherapeutic formulation of insulin with reduced episodes of hypoglycaemiaNature Nanotechnology, 2024; DOI: 10.1038/s41565-023-01565-2

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