Cotton Candy Grapes: Are They Healthy? Nutrition & Benefits

Bite into a cotton candy grape and you taste toffee and spun sugar, from a grape with nothing added to it.45 That flavor comes wrapped in everything a grape carries, from water and a little fiber to the protective plant compounds in its skin.

Grapes have been prized as food since Bible times. When Moses sent men to scout the land of Canaan, Scripture records: "And they came unto the brook of Eshcol, and cut down from thence a branch with one cluster of grapes, and they bare it between two upon a staff" (Numbers 13:23, KJV). Grapes are on the fruit list in The Biblio Diet, the book I wrote with Jordan Rubin, where we call organic fresh or frozen fruit the best choice.6 As I've said on my show, the sugar to worry about is sugar without the fiber and nutrients of a whole food,7 and a grape keeps both.

The variety is young, crossed in 2003 and patented in 2013,4 but whole table grapes have their own human research, from blood pressure and blood fats to gut bacteria, eye health and the risk of type 2 diabetes.

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What are cotton candy grapes?

The berries are light green and can turn amber where the sun hits them, and under the sweetness there's a hint of the wild riverbank grape, Vitis riparia.4 Near Delano, California, where the variety was developed, the fruit ripens around mid-August, which makes it one of the late summer fruits.4 As of 2024, it was grown in 13 countries, with production topping 34,000 tons.5

Are cotton candy grapes natural or GMO?

According to the plant patent, the cross paired an unnamed hybrid grape selection from the University of Arkansas with the Princess table grape, pollinated by hand in May 2003.4 That's traditional cross-breeding, with no genetic engineering involved.

Nothing is injected or stirred in to create the flavor, and there's no added sugar. When Italian researchers analyzed the aroma of cotton candy grapes grown in Apulia, they traced the candy-floss and caramel notes to compounds the fruit produces itself, including furaneol and vanillin, along with a rose-scented compound called 2-phenylethanol.5 The patent notes that typical commercial table grapes have a neutral flavor of sugar and acid with no strong aroma,4 which is why this one stands out the moment you taste it.

Cotton candy grapes nutrition facts

Calculated from USDA FoodData Central record 174683 (red or green European-type grapes, raw) at USDA's 151-gram cup. USDA has no separate record for cotton candy grapes, a green, seedless table grape that most closely resembles its parent, the Princess table grape. % Daily Value uses FDA reference values.148

For a sweet fruit, a cup brings a useful share of copper and vitamin K, the two nutrients grapes supply most, plus B vitamins, potassium and a little lutein.1 Grapes are 80.5% water by weight, so a bowl of them is as hydrating as it is sweet.

Cotton candy grapes are big. At the patent's average of about 9.7 grams a berry, 10 of them weigh about 97 grams and carry roughly 67 calories, while USDA's standard 10 table grapes weigh 49 grams.41 If you count grapes, count about half as many of these.

How much sugar is in cotton candy grapes?

The sugar in grapes splits almost evenly between fructose, about 12.3 grams a cup, and glucose, about 10.9 grams.1 The patent's sample of this variety tested about 19.2 degrees Brix, a measure of the sugar dissolved in the juice.4

On the glycemic index, pure glucose scores 100, and any food that scores 55 or below counts as low.9 Fresh grapes have tested 43 and 49 in people with type 2 diabetes and 59 for black grapes in healthy adults, putting them among low-glycemic foods or just above the line.3 In a test in which each of 25 adults with obesity had a single dose of 46 grams of grape powder, about 252 grams of fresh grapes, or a placebo with breakfast on separate days, their blood sugar, insulin and triglycerides over the next seven hours didn't differ.10

I've written that a high-sugar fruit such as grapes is a better choice than packaged cupcakes or a bag of candy, and that if you have diabetes or sugar sensitivity, you should eat them in moderation.6 On my show, I've said berries are the best fruit choice, with more fiber, less sugar and a lower glycemic effect, and that grapes, apples and watermelon are fantastic choices too.7 Everyone should be careful with even natural sugars, and that includes the sugar in a sweet grape.6

My Insulin Resistance & Prediabetes protocol puts candy and desserts on its avoid list, along with eating carbs on their own,11 so trade the candy for grapes and eat them with a handful of walnuts or almonds, a little goat cheese or a bowl of plain yogurt.

What are cotton candy grapes good for?

How do cotton candy grapes work in your body?

A grape works through its whole package: natural sugar that arrives with water and fiber, and a skin full of polyphenols.

Health benefits of cotton candy grapes, ranked by evidence

Whole table grapes have human research behind seven benefits, ranked here by the strength of that evidence: lower type 2 diabetes risk, healthier blood pressure and blood fats, lower inflammation and oxidative stress, a shift in gut bacteria, more protective pigment in the eye, steadier brain metabolism, and muscle strength after menopause.

Do cotton candy grapes have resveratrol and other polyphenols?

Yes, and almost all of them are in the skin. When Spanish researchers analyzed seven table grape varieties, the polyphenols were concentrated in the skin, and the flesh was almost devoid of them.2 In white and green table grapes, the main polyphenols were flavan-3-ols, at 52 to 81 milligrams per kilogram of fruit, along with flavonoids such as quercetin and kaempferol.2 Darker, seeded grapes carry more polyphenols: red and purple skins add anthocyanins, and grape seeds are especially rich in phenolic compounds.223 With a green, seedless grape like this one, rinse the grapes and eat them whole, skin and all.

Resveratrol is in grapes too, in small amounts: in muscadine grape skins, it averaged about 0.1 milligram per 100 grams.24 Resveratrol pills are a different product. In a review of 17 trials of resveratrol supplements, the pills made no significant difference to systolic blood pressure overall; the drop was significant only in trials of people with diabetes and in trials using 300 milligrams a day or more, far beyond anything fruit supplies.25 The grape trials above tested the whole fruit, and that's the form to eat.

As I've said on my show about resveratrol and other antioxidant supplements, "If you want to take a longevity superfood supplement, don't just take the extract, take the entire food."26 With grapes, the entire food is a bowl of fruit.

How many cotton candy grapes should you eat?

Some fruit is always better than none.6 If you're dealing with weight gain, diabetes, cardiovascular issues, metabolic syndrome, PCOS, inflammatory conditions or Candida overgrowth, I narrow fruit to two daily servings from my low-sugar list: avocado, lemons, limes, strawberries, blueberries, apples (especially green apples with the skin), blackberries, olives and grapefruit.6

Portion a cup into a bowl instead of eating from the bag, and pair it with protein or fat.

How to enjoy, buy and store cotton candy grapes

These grapes already taste like a treat, so skip the sugar-coated "candy grapes" recipes.

Buy organic when you can. In USDA's 2022 testing, 94.3% of 706 fresh grape samples carried at least one detectable pesticide residue, and the samples were washed and stemmed before testing.27 You eat grapes skin and all, so I recommend organic grapes whenever you can find them.6

Pick plump, firm grapes still attached to green, flexible stems. A light green to amber color is normal for this variety, and the berries bruise fairly easily, so handle them gently.4

Store grapes unwashed in the refrigerator, and rinse them under running water just before you eat them. To freeze, wash and dry them, spread them on a tray until firm, then move them to a bag.

Cotton candy grape side effects & who should be careful

Are grapes a choking hazard for kids?

Yes, whole ones are. The CDC lists uncut grapes among the foods that can choke babies and toddlers, and cutting food into smaller pieces helps prevent choking.28 Cotton candy grapes are large, about 28 by 23 millimeters,4 so cut them into small pieces before serving them to young children.

Can you be allergic to grapes?

Yes, though few grape allergies are reported. When Italian researchers identified the main grape allergens, one was a lipid transfer protein that cross-reacts with the one in peaches, so people allergic to peaches can react to grapes too.29 Know the signs of a food allergy, and see the box below for what to do.

Do grapes interact with medications?

Grape juice can. In a study in which each of 12 healthy men took the transplant drug cyclosporine once with purple grape juice and once with water, the juice cut the amount of drug absorbed by 30%.30 The researchers advised keeping cyclosporine and purple grape juice at least two hours apart; if you take cyclosporine, confirm the timing with your doctor or pharmacist.30 In a review of fruit juices other than grapefruit, none caused the kind of severe drug interactions grapefruit juice can.31

If you take warfarin, keep your vitamin K intake steady from week to week. A cup of grapes carries about 22 micrograms, and a review of studies found that dietary vitamin K may affect warfarin only at intakes above 150 micrograms a day.132

The bottom line

Cotton candy grapes: frequently asked questions

References

1. U.S. Department of Agriculture, Agricultural Research Service. Grapes, red or green (European type, such as Thompson seedless), raw. FoodData Central, SR Legacy, FDC ID 174683 (NDB 09132). Published April 1, 2019.
2. Cantos E, Espín JC, Tomás-Barberán FA. Varietal differences among the polyphenol profiles of seven table grape cultivars studied by LC-DAD-MS-MS. J Agric Food Chem. 2002;50(20):5691-6. doi:10.1021/jf0204102
3. Atkinson FS, Foster-Powell K, Brand-Miller JC. International tables of glycemic index and glycemic load values: 2008. Diabetes Care. 2008;31(12):2281-3. doi:10.2337/dc08-1239
4. Cain DW, inventor; International Fruit Genetics, LLC, assignee. Grapevine ‘IFG Seven’. United States Plant Patent PP23,399 P2. Filed August 24, 2011; granted February 19, 2013.
5. Bonello F, Danieli F, Ragkousi V, et al. Aromatic Profiling of New Table Grape Varieties Using Gas Chromatography/Mass Spectrometry and Olfactometry. Plants (Basel). 2024;13(13):1820. doi:10.3390/plants13131820
6. Axe J, Rubin J. The Biblio Diet. Hachette Book Group; 2025. ISBN 9781546008439. Fruit chapter (sugar in fruit; fruit servings guidance; "Natural Design"); added-sugar section ("naturally occurring sugar that comes from fruit"); food lists ("Fruits").
7. Axe J. 11 Foods with SHOCKINGLY High Amounts of Sugar (Best Sugar Substitutes). The Dr. Josh Axe Show (episode). 2024. Lines cited at 22:15, 22:43, 22:54, 23:13 and 23:21 (pull quote). YouTube: https://www.youtube.com/watch?v=KG7_2ZYmHLU&t=1335s
8. U.S. Food and Drug Administration. Daily Value on the Nutrition and Supplement Facts Labels.
9. Atkinson FS, Brand-Miller JC, Foster-Powell K, et al. International tables of glycemic index and glycemic load values 2021: a systematic review. Am J Clin Nutr. 2021;114(5):1625-1632. doi:10.1093/ajcn/nqab233
10. García-Díez E, Cuesta-Hervás M, Veses-Alcobendas AM, et al. Acute supplementation with grapes in obese subjects did not affect postprandial metabolism: a randomized, double-blind, crossover clinical trial. Eur J Nutr. 2021;60(5):2671-2681. doi:10.1007/s00394-020-02451-6
11. Axe J. Insulin Resistance & Prediabetes protocol. DrAxe.com; 2026. Phase 1, "Stabilize," p. 16 (avoid list: "Candy and desserts"; "Eating carbs on their own").
12. Muraki I, Imamura F, Manson JE, et al. Fruit consumption and risk of type 2 diabetes: results from three prospective longitudinal cohort studies. BMJ. 2013;347:f5001. doi:10.1136/bmj.f5001. Correction: BMJ. 2013;347:f6935.
13. Ashoori M, Soltani S, Kolahdouz-Mohammadi R, et al. The effect of whole grape products on blood pressure and vascular function: A systematic review and meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis. 2023;33(10):1836-1848. doi:10.1016/j.numecd.2023.05.001
14. Zern TL, Wood RJ, Greene C, et al. Grape polyphenols exert a cardioprotective effect in pre- and postmenopausal women by lowering plasma lipids and reducing oxidative stress. J Nutr. 2005;135(8):1911-7. doi:10.1093/jn/135.8.1911
15. Yang J, Kurnia P, Henning SM, et al. Effect of Standardized Grape Powder Consumption on the Gut Microbiome of Healthy Subjects: A Pilot Study. Nutrients. 2021;13(11):3965. doi:10.3390/nu13113965
16. Hu W, Zheng R, Feng Y, et al. Impacts of regular consumption of grapes on macular pigment accumulation in Singapore older adults: a randomized controlled trial. Food Funct. 2023;14(18):8321-8330. doi:10.1039/d3fo02105j
17. Barona J, Blesso CN, Andersen CJ, et al. Grape consumption increases anti-inflammatory markers and upregulates peripheral nitric oxide synthase in the absence of dyslipidemias in men with metabolic syndrome. Nutrients. 2012;4(12):1945-57. doi:10.3390/nu4121945
18. Dave A, Beyoğlu D, Park EJ, et al. Influence of grape consumption on the human microbiome. Sci Rep. 2023;13(1):7706. doi:10.1038/s41598-023-34813-5
19. Lee J, Torosyan N, Silverman DH. Examining the impact of grape consumption on brain metabolism and cognitive function in patients with mild decline in cognition: A double-blinded placebo controlled pilot study. Exp Gerontol. 2017;87(Pt A):121-128. doi:10.1016/j.exger.2016.10.004
20. Mendez JL, Rodriguez Lanzi C, Quan Z, et al. Daily consumption of polyphenol-rich grape powder improves muscle strength markers in postmenopausal women. Food Funct. 2025;16(12):4719-4730. doi:10.1039/d5fo01523e
21. Barona J, Aristizabal JC, Blesso CN, et al. Grape polyphenols reduce blood pressure and increase flow-mediated vasodilation in men with metabolic syndrome. J Nutr. 2012;142(9):1626-32. doi:10.3945/jn.112.162743
22. Bardagjy AS, Hu Q, Giebler KA, et al. Effects of grape consumption on biomarkers of inflammation, endothelial function, and PBMC gene expression in obese subjects. Arch Biochem Biophys. 2018;646:145-152. doi:10.1016/j.abb.2018.04.003
23. Sandhu AK, Gu L. Antioxidant capacity, phenolic content, and profiling of phenolic compounds in the seeds, skin, and pulp of Vitis rotundifolia (Muscadine Grapes) As determined by HPLC-DAD-ESI-MS(n). J Agric Food Chem. 2010;58(8):4681-92. doi:10.1021/jf904211q
24. Pastrana-Bonilla E, Akoh CC, Sellappan S, et al. Phenolic content and antioxidant capacity of muscadine grapes. J Agric Food Chem. 2003;51(18):5497-503. doi:10.1021/jf030113c
25. Fogacci F, Tocci G, Presta V, et al. Effect of resveratrol on blood pressure: A systematic review and meta-analysis of randomized, controlled, clinical trials. Crit Rev Food Sci Nutr. 2019;59(10):1605-1618. doi:10.1080/10408398.2017.1422480
26. Axe J. The BIGGEST Causes of Fast-Aging Skin (How to Reverse Aging). The Dr. Josh Axe Show (episode). 2025. Quoted line at 23:04–23:12. YouTube: https://www.youtube.com/watch?v=tsTht-zHz-U&t=1384s
27. U.S. Department of Agriculture, Agricultural Marketing Service. Pesticide Data Program Annual Summary, Calendar Year 2022 (Appendix K, Number of Pesticides Detected per Sample; Appendix L, Samples Reported to FDA). Washington, DC: USDA AMS; 2024.
28. Centers for Disease Control and Prevention. Choking Hazards. Infant and Toddler Nutrition. Last reviewed March 11, 2026.
29. Pastorello EA, Farioli L, Pravettoni V, et al. Identification of grape and wine allergens as an endochitinase 4, a lipid-transfer protein, and a thaumatin. J Allergy Clin Immunol. 2003;111(2):350-9. doi:10.1067/mai.2003.35
30. Oliveira-Freitas VL, Dalla Costa T, Manfro RC, et al. Influence of purple grape juice in cyclosporine bioavailability. J Ren Nutr. 2010;20(5):309-13. doi:10.1053/j.jrn.2010.01.007
31. Chen M, Zhou SY, Fabriaga E, et al. Food-drug interactions precipitated by fruit juices other than grapefruit juice: An update review. J Food Drug Anal. 2018;26(2S):S61-S71. doi:10.1016/j.jfda.2018.01.009
32. Violi F, Lip GY, Pignatelli P, et al. Interaction Between Dietary Vitamin K Intake and Anticoagulation by Vitamin K Antagonists: Is It Really True?: A Systematic Review. Medicine (Baltimore). 2016;95(10):e2895. doi:10.1097/MD.0000000000002895
33. Soltani S, Asoudeh F, Motallaei M, et al. Whole grapes or grape products on body weight, anthropometrics, and adipokines: systematic review and meta-analysis of randomized controlled trials. Int J Food Sci Nutr. 2025;76(2):122-133. doi:10.1080/09637486.2024.2449037

Dr. Josh Axe, DC, DNM, CNS

Doctor of Natural Medicine · Founder, DrAxe.com

Dr. Axe is a certified doctor of natural medicine, clinical nutritionist, and multiple New York Times bestselling author. He has spent 20+ years in clinical practice helping people heal at the root cause and founded one of the most-visited natural-health platforms in the world.

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