Causes & What We Know/August 19, 2026/2 min read

Can Propolis Delay Type 1 Diabetes? What a New Mouse Study Shows

Researchers found that a honey bee product called propolis temporarily slowed diabetes development in mice. The findings offer a starting point for understanding how natural compounds might influence the immune system in type 1 diabetes.

PubMed indexed literature

Evidence label explains the kind of source behind this article (for example peer-reviewed literature vs community video). It is not medical advice.

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Key takeaways

Propolis delayed the onset of type 1 diabetes in laboratory mice, but only temporarily—the effect faded over time.
Propolis appeared to reduce immune cell activity in the pancreas and shift the balance of immune responses in ways that might protect against autoimmune attack.
Changes in gut bacteria composition were observed in mice eating propolis, which may play a role in the immune effects.
This is early-stage research in mice and does not yet tell us whether propolis would have similar effects in people.

What Is Propolis?

Propolis is a sticky, resinous substance made by honey bees from plant materials. It has been used in traditional medicine around the world for centuries, particularly for its anti-inflammatory properties. Scientists have documented that propolis can affect how the immune system works, which raises the question: could it influence type 1 diabetes development?

The Study: Design and What Researchers Found

Researchers gave female NOD mice—a strain that naturally develops autoimmune diabetes—either standard food or food mixed with propolis for 26 weeks. They tracked when diabetes appeared and examined immune system changes at 14 weeks.

At 17 weeks, mice eating propolis developed diabetes more slowly than mice eating regular food. However, by 30 weeks (the end of the study), the total number of mice that had developed diabetes was similar across all groups. In other words, propolis delayed onset but did not prevent diabetes overall.

How Propolis May Have Worked

When researchers examined the mice's immune systems, they found that high-dose propolis reduced the number of immune cells infiltrating the pancreas—the organ attacked in type 1 diabetes. Propolis also changed the types and amounts of immune cells in ways that may have temporarily slowed autoimmune attack.

The mice eating propolis also showed shifts in their gut bacteria, including an increase in a bacterial species called Akkermansia muciniphila. Because gut bacteria influence immune system behavior, these changes may have contributed to the protective effect observed.

What This Means—and What It Doesn't

This research is an important early step in understanding whether compounds from nature might influence type 1 diabetes. It shows that propolis can affect immune responses in mice, which justifies further investigation.

However, this was a laboratory study in one mouse strain. Results in mice do not automatically translate to humans, and much more research would be needed before we could know whether propolis might help delay or influence type 1 diabetes in people. This study is not a basis for treatment decisions.

Evidence label

Source: Journal of ethnopharmacology. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.

Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.

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