At least one named Jarrah honey product has a documented low glycaemic index result. That does not establish a single GI value for every Jarrah honey. To assess a particular jar, the important question is whether reliable testing supports the claim for that product.
This distinction is easy to lose when "low GI honey" appears beside an activity grade, a sugar-composition chart or a general article about Australian honey. Those pieces of information do not all measure the same thing.
Here is how to read the evidence, understand the numbers and keep serving size in the picture.
What is the glycaemic index?
The glycaemic index, usually shortened to GI, compares the blood-glucose response to a carbohydrate-containing food with a reference food under controlled conditions. It is based on comparable amounts of available carbohydrate, not simply equal spoonfuls. (1)
On the glucose-reference scale, the usual categories are low GI at 55 or below, medium GI at 56-69 and high GI at 70 or above. GI describes a measured response; it is not a complete assessment of a food's nutritional value. (1)
"Glycemic" is the US spelling used in some databases and search terms. "Glycaemic" is used in Australian English; the concept is the same.
What Jarrah-specific evidence is available?
The University of Sydney's international GI database lists Jarrah Platinum Honey, branded Forest Fresh, with a GI of 46. It attributes the result to Sydney University's Glycemic Index Research Service, describes it as 2023 unpublished observations, and records ten participants with normal glucose regulation and a two-hour test period. (2)
That is useful product-specific human testing information. It is not a published clinical trial showing long-term diabetes outcomes, and it is not a test result for Australian Honey Company's range.
The careful conclusion is therefore that a Jarrah product has been recorded in the low-GI range. Copying that result onto another brand, batch or differently specified product would need supporting evidence; sharing a floral name is not enough.
This guide does not assign a GI value to Australian Honey Company products because no matching product test report has been supplied for that purpose.
A commonly confused Australian honey report
AgriFutures Australia hosts the 2005 report Preliminary Assessment of the Glycemic Index (GI) of Honey. Its description identifies six floral varieties: Red Gum, Salvation Jane, Ironbark, Yellow Box, Stringybark and Yapunyah, together with two commercial blends. Jarrah is not identified as one of those tested floral varieties. (3)
The report is relevant to the broader point that honey types can differ. It should not be cited as though it directly measured Jarrah honey's GI.
This is a useful habit when reading any food claim: open the original source, check exactly what was tested and distinguish that from the wording of an article referring to it.
Can a fructose-to-glucose ratio prove low GI?
A 2024 Jarrah authentication study measured the sugar composition of an authenticated honey blend, alongside other physicochemical characteristics. Its work concerned identifying and characterising Jarrah honey; the reported analyses were not a human GI test of Australian Honey Company's products. (4)
A laboratory sugar profile can help explain a product's composition. It does not become a measured human GI simply because someone applies a marketing label to the ratio.
Treat an estimate, an explanation of a possible mechanism and a direct human measurement as different forms of information. A careful seller should be able to explain which one supports their wording.
GI and TA answer different questions
| Information on a label or report | What it addresses | What it cannot establish on its own |
|---|---|---|
| GI result | Blood-glucose response in a defined test. (1) | The carbohydrate amount in your chosen serving. |
| TA result | Antibacterial activity in a laboratory assay. (5) | The product's GI or suitability for diabetes. |
| Nutrition information panel | Carbohydrate amounts for the stated quantity. (6) | A GI value measured in people. |
| Floral-source evidence | Whether the origin claim is supported. (4) | A clinical benefit from eating the honey. |
A Jarrah TA rating should never be converted into a GI number. The Jarrah TA guide explains activity grading, while Jarrah honey benefits and research discusses the limits of wider health claims.
Low GI does not mean low sugar
Diabetes Australia notes that honey and other nutritive sweeteners still contribute carbohydrate. The amount used matters alongside the type of food. (6)
For illustration only, imagine a honey label listing 82 g carbohydrate per 100 g. That hypothetical product would provide 8.2 g carbohydrate in a 10 g portion, or 16.4 g in a 20 g portion. These are arithmetic examples, not the analysed nutrition values of any product in our range.
The calculation is: serving weight in grams multiplied by carbohydrate per 100 g, divided by 100. Use the actual nutrition panel for your own jar.
The honey calories and serving-size guide helps separate teaspoons, tablespoons and grams. Our honey versus sugar comparison puts the choice of sweetener into a wider everyday context.
What should a credible product claim show?
Ask for the name of the tested product, the testing service, the method and date, and an explanation of how the result relates to the honey currently being sold. Where relevant, ask how the supplier maintains product consistency and traceability.
Not every useful document has to be a public journal article. A recognised testing service's report can be relevant evidence, but it should be described accurately rather than relabelled a peer-reviewed treatment trial.
Likewise, a research paper about another honey is not automatically invalid or useless. It simply cannot do the job of a matching product report when the claim is product-specific.
Australian nutrition and health claims are subject to conditions under the Food Standards Code. Businesses need to check the applicable requirements rather than treating a scientific citation or a disclaimer as automatic approval for advertising language. (7)
Can people with diabetes eat Jarrah honey?
That is an individual food-planning question, not a promise a retailer should make from the word "Jarrah". Discuss portions and carbohydrate counting with your diabetes care team or an Accredited Practising Dietitian, particularly when medication and meal planning are involved. (6)
See honey and diabetes: portions and carbohydrates for the general principles. Do not change prescribed treatment because of a honey label or an internet claim.
Frequently asked questions
Is all Jarrah honey low GI?
The product-specific evidence described here does not establish that. A result for one tested product is not a universal value for the floral category.
Does a higher TA rating mean a lower GI?
No such conversion is established by the information above. TA and GI concern different tests and should be assessed separately.
Is a laboratory sugar analysis enough to claim a measured GI?
It is evidence about composition, not the same thing as a human GI measurement. Ask the seller which evidence supports the exact claim.
Does adding low-GI honey make an entire recipe low GI?
A tested ingredient does not establish a measured GI for a different finished food. Avoid presenting a cake, drink or breakfast as GI-tested merely because one ingredient has a result.
The useful buying habit is to match the claim to the evidence and the evidence to the product. Then use the actual serving size, not a reassuring label phrase, when considering carbohydrate intake.
General information only; not personalised diabetes advice. This article is not a product certification.
Sources
- University of Sydney: About the glycaemic index and its measurement
- University of Sydney: International GI database, Jarrah Platinum Honey entry
- Arcot and Brand-Miller (2005): Preliminary Assessment of the Glycemic Index (GI) of Honey
- Islam, Barbour and Locher (2024): Authentication of Jarrah honey through its nectar signature and assessment of its typical physicochemical characteristics
- Irish, Blair and Carter (2011): The Antibacterial Activity of Honey Derived from Australian Flora
- Diabetes Australia: Sugar, oh honey, honey
- FSANZ: Nutrition, health and related claims