Turmeric Glycemic Index
Low GI · The honest verdict
Gentle on blood sugar
Glycemic index
10
per source
Glycemic load
0
Low GL
This food's glycemic index is 10, which is Low GI.
Turmeric is a spice with minimal carbohydrate content, so its effect on blood sugar is essentially zero. It is safe for people with diabetes and can be used freely to season food. This is general nutrition information, not medical advice — people with diabetes should confirm any dietary changes with their care team.
GI numbers vary by source, ripeness, and how a food is prepared. This is general nutrition information — not medical advice. If you manage diabetes, confirm specifics with your care team.
Key facts
Turmeric has an estimated GI of ~10 — one of the lowest values among all foods tested.
One teaspoon of ground turmeric contains only 1.5 g net carbs and 10 calories.
Turmeric provides 26% of the daily value for manganese per teaspoon — a trace mineral important for bone health and metabolism.
What's actually inside
Per 100 g, with your typical serving noted as 1 teaspoon (3 g), ground. The carb family is what moves blood sugar — fiber is the number that softens the spike.
Total carbs
1.8g
Net carbs
1.5g
total carbs minus fiber
Fiber
0.3g
slows the glucose rise
- Sugars
- 0.1g
- Protein
- 0.3g
- Calories
- 10kcal
Notable nutrients
- Manganese0.5 mg (26% DV)
- Iron1.4 mg (8% DV)
- Copper0.1 mg (6% DV)
- Vitamin C0.7 mg
- Potassium55 mg
Is it a smart choice for blood sugar?
GI is only half the story — portion (glycemic load) and what you eat it with decide the real-world effect. Here's the honest read.
The verdict
Excellent — negligible carb impact, safe in any culinary amount
Turmeric is a spice with minimal carbohydrate content, so its effect on blood sugar is essentially zero. It is safe for people with diabetes and can be used freely to season food. This is general nutrition information, not medical advice — people with diabetes should confirm any dietary changes with their care team.
Portion guidance
Turmeric is typically used in teaspoon amounts (2–3 g). Even a generous tablespoon (9 g) contains only about 5 g of carbs, most of which is fiber and starch. There is no practical portion concern for glycemic management.
This is general nutrition information, not personal medical advice. Blood sugar responses are individual — if you have diabetes or prediabetes, your care team can tell you how this fits your plan.
How to keep the spike small
The same food can land differently depending on how it's cooked and what it's eaten with. Use these levers to your advantage.
Cooking in curries and stews
Little effectCooking turmeric in liquid does not change its glycemic properties. The spice remains low-GI regardless of preparation.
Pairing with black pepper (piperine)
Little effectBlack pepper enhances curcumin absorption but does not affect turmeric's glycemic index or carb content.
Golden milk or turmeric lattes
Raises GIThe glycemic impact of a turmeric latte depends entirely on added sweeteners and milk. Plain turmeric in hot water or unsweetened milk is negligible; added sugar or honey can raise GI significantly.
Pairing tip
Turmeric pairs well with black pepper for enhanced absorption and with healthy fats like coconut oil or olive oil. For a low-GI meal, use turmeric in vegetable stir-fries, lentil soups, or with grilled proteins. Avoid adding sugar or honey to turmeric preparations if glycemic control is a concern.
Why GI numbers vary
Turmeric GI data is extremely limited because the spice is rarely tested as a standalone food — its carb content per serving is so low that GI is essentially not applicable. The estimated value of ~10 is based on its very low carbohydrate density and is consistent with other non-starchy spices. In practice, turmeric has no meaningful glycemic effect in culinary amounts.
Not medical advice. This page is general nutrition information about Turmeric. It isn't a diagnosis or a treatment plan. If you have diabetes, prediabetes, or another condition affecting blood sugar, confirm any dietary decisions with your doctor or care team.
❓Frequently Asked Questions
Turmeric has a very low glycemic index, estimated around 10. Because it is a spice used in very small amounts (1–3 g per serving), its total carbohydrate content is minimal — about 1.5 g net carbs per teaspoon. This means turmeric has essentially no effect on blood sugar levels. It is classified as a low-GI food.
Yes, turmeric is considered safe and potentially beneficial for people with diabetes when used as a spice in normal culinary amounts. It has negligible carbohydrate content and does not raise blood sugar. Some research suggests curcumin, the active compound in turmeric, may have anti-inflammatory properties, though this is not a substitute for medical treatment. People with diabetes should discuss any supplement-level turmeric use with their care team — this is general nutrition information.
Turmeric is not a treatment for high blood sugar. While some laboratory and animal studies suggest curcumin may influence insulin sensitivity, human evidence is mixed and turmeric is not approved for blood sugar management. In practical terms, turmeric adds flavor without raising blood sugar, but it should not be relied on to lower glucose levels. People with diabetes should follow their prescribed treatment plan.
Turmeric supplements contain concentrated curcumin and are different from culinary turmeric. They may interact with diabetes medications, particularly blood thinners and drugs metabolized by the liver. Anyone with diabetes considering turmeric supplements should consult their healthcare provider first. This is general information, not medical advice.
Culinary turmeric is safe in typical amounts — up to 1–2 teaspoons per day in cooking. Higher amounts from supplements may cause digestive upset or interact with medications. For glycemic purposes, there is no restriction because the carb content is negligible. Stick to food amounts unless a healthcare provider advises otherwise.
Related Articles
Caramel Glycemic Index, Load & Nutrition
Caramel has a GI of roughly 60–65 (medium–high) and a meaningful glycemic load per serving. Honest GI, GL, nutrition, and blood sugar context explained.
Read moreCheerios Glycemic Index, Load & Nutrition
Cheerios have a high GI of around 74 and a moderate glycemic load per serving. Honest GI, GL, nutrition, and pairing tips for a lower blood sugar response.
Read moreKumquat Glycemic Index, Load & Nutrition
Kumquats have a low GI (~32–44) and extremely low glycemic load — each tiny fruit has under 3 g net carbs. Full nutrition and honest GI data inside.
Read moreBell Pepper Glycemic Index, Load & Nutrition
Bell peppers have a very low glycemic index of about 15 and a negligible glycemic load. Full nutrition facts, diabetes-friendliness verdict, and prep tips.
Read moreBrussels Sprout Glycemic Index, Load & Nutrition
Brussels sprouts have a very low GI of around 15 and negligible glycemic load — 3 g net carbs per serving. GL, nutrition, and diabetes verdict included.
Read moreEating well is easier when allergies aren't in the way
Curex helps people find and treat the allergies behind everyday symptoms with at-home testing and immunotherapy. If food or seasonal allergies make eating well harder than it should be, that's where we can help — no pressure, just here if you need it.
Curex focuses on allergies — not diabetes or blood-sugar care. For blood sugar, your primary care team is the right place to start.
Reviewed by
Curex Editorial TeamReviewed for accuracy
Last reviewed July 2026