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Kale

What the research shows

Prototype

Not enough

published research on this page yet

2 health findings on this page so far · See the findings

A cabbage grown for its edible leaves, also used as an ornamental plant.

Written from English Wikipedia1

What research says

Studies in people

  • Benefit

    Skin aging3

    In people, taking curly kale extract daily for months raised skin carotenoids and improved the collagen aging index.

Animal and lab studies only

  • Benefit

    Blood sugar control7

    In animal studies, an apple and kale extract improved blood sugar levels in mice fed a high-sugar, high-fat diet.

Study type not stated

  • Benefit

    Heart and blood sugar health4

    Kale contains compounds that studies link to lower risk of heart problems and type 2 diabetes.

  • Benefit

    Nutrient gaps in diets5

    Lentil and kale added to a cereal-based diet would boost intakes of essential minerals and vitamins.

  • Benefit

    Nutrients in leafy greens6

    Kale contains many compounds like vitamins and fatty acids that may help lower the risk of long-term diseases.

How it’s made and used

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Products

The 6 most-scanned of 2,914 products on Open Food Facts that list kale.

  • KIDDYLICIOUS Veggie Straws - saveur Légumes - 48g (4x12g) Kiddylicious · 48 g 0 additives
  • Organic Protein Orgain · 43.2 oz (2.7 lbs) 1.22 kg 6 additives
  • Organic Protein Protein Powder Orgain · 1.2 kg 6 additives
  • Veggie Straws Eat Real 0 additives
  • Raw Greens Virgin Smoothie Mockingbird · 750 ml 0 additives
  • Spanish butter bean stew BOL · 450 g 0 additives

References

  1. 1Kale. Wikipedia. Accessed September 26, 2026.
  2. 2Alfawaz HA, Wani K, Alrakayan H, Alnaami AM, Al-Daghri NM. Awareness, Knowledge and Attitude towards 'Superfood' Kale and Its Health Benefits among Arab Adults. Nutrients. 2022;14(2). doi:10.3390/nu14020245
  3. 3Meinke MC, Nowbary CK, Schanzer S, Vollert H, Lademann J, Darvin ME. Influences of Orally Taken Carotenoid-Rich Curly Kale Extract on Collagen I/Elastin Index of the Skin. Nutrients. 2017;9(7). doi:10.3390/nu9070775
  4. 4Łukaszyk A, Kwiecień I, Kanik A, et al. Nutritional, Therapeutic, and Functional Food Perspectives of Kale (Brassica oleracea var. acephala): An Integrative Review. Molecules. 2025;30(21). doi:10.3390/molecules30214214
  5. 5Migliozzi M, Thavarajah D, Thavarajah P, Smith P. Lentil and Kale: Complementary Nutrient-Rich Whole Food Sources to Combat Micronutrient and Calorie Malnutrition. Nutrients. 2015;7(11):9285-98. doi:10.3390/nu7115471
  6. 6Nemzer B, Al-Taher F, Abshiru N. Extraction and Natural Bioactive Molecules Characterization in Spinach, Kale and Purslane: A Comparative Study. Molecules. 2021;26(9). doi:10.3390/molecules26092515
  7. 7Schloesser A, Esatbeyoglu T, Schultheiß G, et al. Antidiabetic Properties of an Apple/Kale Extract In Vitro, In Situ, and in Mice Fed a Western-Type Diet. J Med Food. 2017;20(9):846-854. doi:10.1089/jmf.2017.0019