Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Kale (Brassica oleracea var. sabellica) is a cruciferous vegetable widely recognized for its rich nutrient profile, including dietary fiber, vitamins (A, C, K), minerals (calcium, magnesium), and phytochemicals (glucosinolates, flavonoids). Scientific evidence suggests that kale may support stomach and digestive health primarily through its fiber content, which aids in regular bowel movements and supports beneficial gut microbiota. Several studies have shown that dietary fiber from leafy greens like kale can improve stool consistency and promote digestive comfort.

Moreover, kale contains glucosinolates, compounds that are converted into bioactive substances (such as sulforaphane) during digestion. Some research indicates these compounds may help protect the stomach lining by reducing inflammation and oxidative stress, and may even inhibit the growth of Helicobacter pylori, a bacterium associated with ulcers and gastritis. However, most of these studies rely on broader research on cruciferous vegetables rather than kale specifically.

While kale is not a traditional remedy for stomach ailments in herbal medicine, its nutritional content is scientifically recognized as beneficial for general digestive health. Still, there is limited direct clinical evidence specifically linking kale to the prevention or treatment of stomach diseases. Thus, while the use of kale to support the stomach is backed by reasonable scientific rationale, the evidence is moderate rather than strong.

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