Can diabetic patient eat grapes? Grapes and Diabetes

Grapes are the fruit that we enjoy eating slowly, piece by piece, when we really want to kill time. Can diabetic patient eat grapes? Can grapes and diabetes go hand-in-hand? Let’s answer these questions…

“Pardon me, I had too many grapes last night…”


Table showing nutrional information of 100g ripe grapes (black/red & green)
Calories 69  
GI 59  
Saturated fats 0.1g  
Carbs 18g (15g sugars & 0.9g dietary fibers) 5% (61% & 3%)
Proteins 0.7g 1%


Glycemic Index and Glycemic Load

GI = 59

GL = 59*18/100 = 10.6 UPPER LIMIT

It is astonishing that 100g of grapes have higher glycemic index than the same amount of mangoes even though the latter fruit tastes sweeter.

Also read: Can a diabetic eat Mango?

Although the sugar content in both the fruits is almost equal, it is the higher glycemic index of grapes that increases its glycemic load. Thus, the recommended intake of grapes for diabetics is definitely not more than 100g, in fact it should be limited to 50g every other day. Having grapes as a part of green leafy salad will help reduce its impact on blood glucose levels. Post consumption walks (for 15-20 minutes) always help in healthy climax.


Vitamin C 5% of RDA | An experimental study suggests that vitamin C supplementation of 1000mg per day for 6 weeks can cause reduction in blood sugar and lipid levels along with insulin. However, the supplemental dose is almost 17 times the RDA, but increasing the dietary vitamin C intake can help reduce the supplemental dose. Also, as you can see, vitamin C will also help to prevent dyslipidemia which is commonly seen among diabetics.

Vitamin B-6 5% of RDA | Deficiency of vitamin B6 leads to reduction in circulating levels of insulin mainly caused by deficiency induced degenerative changes in the beta cells of pancreas which are the insulin secreting cells of the pancreas.

Iron 2% of RDA | Iron has a pathogenic role to play in the development of diabetes mellitus and its complications mainly retinopathy (eye complication) and nephropathy (kidney complication).

Can diabetic patient eat grapes? (Grapes and Diabetes)

A scientific study mentions that greater consumption of grapes (~5 servings/week) is associated with reduced risk of developing type 2 diabetes. This is also true for apples.

Also read: Can diabetics eat bananas and apples?

However, this is not in line with the individuals who already have developed type 2 diabetes. Until further investigation is done, the diabetes affected individuals should keep in mind that grapes are high glycemic index and high glycemic load food. Therefore, it is better to consume grapes in moderation and less frequent.

Red grapes (aka black grapes) are known to contain a chemical compound known as Resveratrol (RSV). RSV has anti-hyperglycemic effect (anti-highbloodsugar effect) and is considered to be investigated for anti-diabetic therapy by the diabetes researchers.


Hey there, I'm a final year undergrad medical student at Sir Seewoosagur Ramgoolam Medical College (SSRMC), Mauritius.

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  1. Pingback: Is watermelon good for diabetics? Watermelon and Diabetes | Diabetics Today

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