Celery Glycemic Index

Celery has a very low glycemic index of about 15, placing it firmly in the low-GI category. Because celery is roughly 95% water and contains very little carbohydrate, its GI is among the lowest of all vegetables. Even accounting for minor variation across sources, celery consistently ranks as a negligible-impact food on blood sugar.

Yes, celery is an excellent choice for people with diabetes. It has virtually no effect on blood sugar due to its minimal carbohydrate content and high water and fiber content. It can be eaten freely as a snack, added to meals for crunch, or used as a low-calorie vehicle for dips. People with diabetes should still be mindful of what they pair with celery — high-sugar dips or dressings can change the glycemic picture. This is general nutrition information, not medical advice.

Celery juice has a slightly higher glycemic impact than whole celery because juicing removes the fiber, but the effect is still very small. A cup of celery juice contains about 4–5 g of sugar from natural sources, which is far less than fruit juices. For most people, celery juice will not cause a meaningful blood sugar spike, but it is not as neutral as eating whole celery stalks.

Yes, celery is essentially a free food on low-carb and keto diets. One cup of chopped celery has only about 1.6 g of net carbs, meaning you would need to eat several pounds to approach a meaningful carb count. It is an ideal vegetable for adding volume, crunch, and hydration to meals without affecting ketosis or daily carb limits.

Celery provides vitamin K, potassium, folate, and antioxidants like apigenin and luteolin. It is also a good source of hydration due to its high water content. Some research suggests compounds in celery may have anti-inflammatory and blood-pressure-lowering effects, though these claims require more evidence. Celery is a nutrient-dense, low-calorie food that supports overall health regardless of its glycemic profile.