Know2eat

Concord grapes

Vitis labrusca

What concord grapes has been studied for

2 associations assessed — 1 with at least some human evidence behind it. Strongest first.

  • 1 Limited
  • 1 Insufficient
3 things to know first — allergies, interactions and intake limits

About concord grapes

The dark blue slip-skin grape of eastern North America, whose skin separates cleanly from the pulp. Musky and seeded, it is used mainly for juice, jelly and kosher wine rather than table eating.

Also known as American grape, Slip-skin grape, Fox grape

Brain & Cognitive HealthHeart Health

The evidence in depth

Best supported: Limited

What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how impressive the food is. How we rate evidence.

Cognitive function

Brain & Cognitive Health
Limited evidence

Evidence is limited. A handful of small trials of Concord grape juice in older adults with mild memory complaints report improvements on some memory tasks and not others. The trials are short, the samples are tiny, and the comparator is usually a sugar-matched drink rather than no drink.

Limited evidence. Early human work, or mostly lab and animal research.

3 sources

Deep research mode adds each paper’s own conclusion and stated limitations.

Healthy blood pressure

Heart Health
Insufficient evidence

Some short trials of grape juice or grape polyphenol powder report small blood pressure changes, but findings across grape products are inconsistent and Concord grapes as a whole food have not been tested. There is no dependable finding here.

Insufficient evidence. Not enough human research to say anything useful yet.

2 sources

Deep research mode adds each paper’s own conclusion and stated limitations.

Ask about Concord grapes

Ask about Concord grapes

Answers are written only from the entries on this page — the same nutrients, compounds, claims and citations you can read above. Nothing is added from outside the database, and every answer lists what it was built from.

AI explanations are not switched on for this site, so there is nothing to ask here. Everything above is read straight from the database and does not need them.

Key nutrients

Nutrient content per 100 grams
NutrientAmount% DV
Macronutrients
Calories67 kcal3%
Protein0.63 g1%
Total fat0.35 g0%
Carbohydrate17.1 g6%
Fibre0.9 g3%
Total sugars16.3 g—
Water81.3 g—
Fats
Saturated fat0.114 g1%
Monounsaturated fat0.014 g—
Polyunsaturated fat0.102 g—
Cholesterol0 mg0%
EPA (omega-3)0 g—
DHA (omega-3)0 g—
DPA (omega-3)0 g—
Linoleic acid (omega-6)0.079 g—
Vitamins
Vitamin A5 µg1%
Vitamin C4 mg4%
Vitamin D0 µg0%
Vitamin E0.19 mg1%
Vitamin K14.6 µg12%
Thiamin (B1)0.092 mg8%
Riboflavin (B2)0.057 mg4%
Niacin (B3)0.3 mg2%
Pantothenic acid (B5)0.024 mg0%
Vitamin B60.11 mg6%
Folate4 µg1%
Vitamin B120 µg0%
Choline5.6 mg1%
Minerals
Calcium14 mg1%
Iron0.29 mg2%
Magnesium5 mg1%
Phosphorus10 mg1%
Potassium191 mg4%
Sodium2 mg0%
Zinc0.04 mg0%
Copper0.04 mg4%
Manganese0.718 mg31%
Selenium0.1 µg0%
Other measured compounds
Beta-carotene59 µg—
Alpha-carotene1 µg—
Lycopene0 µg—
Lutein + zeaxanthin72 µg—
Caffeine0 mg—
Ash0.57 g—

Nutrient values are per 100 g of the USDA reference entry named on this page and vary with variety, growing conditions, storage and preparation.

Source record: Grapes, american type (slip skin), raw (USDA FoodData Central, FDC ID 174682).

% DV uses the FDA Daily Values for adults and children aged 4 and over. A dash means no Daily Value has been established for that nutrient.

Bioactive compounds

Compounds present in meaningful amounts. Presence is banded rather than quantified, because whole-food levels vary enormously with variety, growing conditions, storage and preparation.

How preparation changes things

Only effects with real support are listed. If a preparation method is missing, it is because nothing dependable is documented — not because it makes no difference.

Nothing dependable is recorded about how preparation changes this food’s nutritional properties. Rather than guess, this section stays empty.

Things to know

Allergies, interactions and intake concerns. Every food gets this section — a reference where everything is uniformly good is not a reference.

  • Too much

    Concord juice is a concentrated sugar source

    Most Concord grapes reach people as juice, in which the fibre is gone and the sugars of many grapes are delivered in one glass. Trials of Concord grape juice are therefore also trials of a sugary drink.

  • Worth knowing

    Choking hazard for young children

    Whole grapes are one of the commonest causes of fatal food choking in children under five because their shape seals the airway. Halving or quartering them lengthways is the standard advice.

  • Allergy

    Grape lipid transfer protein allergy

    Grape allergy driven by lipid transfer proteins is documented, particularly around the Mediterranean, and can cause systemic reactions rather than mouth-only symptoms.