Best studied from a research standpoint is the antioxidant content of green beans. In addition to conventional antioxidant nutrients like vitamin C and beta-carotene, green beans contain important amounts of the antioxidant mineral manganese. But the area of phytonutrients is where green beans really shine through in their antioxidant value. Green beans contain a wide variety of carotenoids (including lutein, beta-carotene, violaxanthin, and neoxanthin) and flavonoids (including quercetin, kaemferol, catechins, epicatechins, and procyanidins) that have all been shown to have health-supportive antioxidant properties. In addition, the overall antioxidant capacity of green beans has been measured in several research studies, and in one study, green beans have been shown to have greater overall antioxidant capacity than similar foods in the pea and bean families, for example, snow peas or winged beans. * Other Health Benefits The strong carotenoid and flavonoid content of green beans also appears to give this vegetable some potentially unique anti-inflammatory benefits. For example, some very preliminary research in laboratory animals shows decreased activity of certain inflammation-related enzymes—lipoxygenases (LOX) and cyclooxygenases (COX)—following intake of bean extracts. Because type 2 diabetes is a health problem that is known to contain a basic component of chronic, unwanted inflammation, we are also not surprised to see some very preliminary research in the area of green bean intake, anti-inflammatory benefits, and prevention of type 2 diabetes. (The very good fiber content of green beans most likely adds to the potential of green beans to help prevent this common health problem.) We expect to see more research in both of these health benefit areas (anti-inflammatory benefits and prevention of type 2 diabetes). * Nutritional Profile Green beans are an excellent source of vitamin K. They are a very good source of manganese, vitamin C, dietary fiber, folate, and vitamin B2. In addition, green beans are a good source of copper, vitamin B1, chromium, magnesium, calcium, potassium, phosphorus, choline, vitamin A (in the form of carotenoids), niacin, protein, omega-3 fatty acids, iron, vitamin B6, and vitamin E. Green beans have also been shown to contain valuable amounts of the mineral silicon, and in a form that makes it easier for us to absorb this bone-supportive and connective tissue-supportive nutrient. Green beans have also been shown to contain valuable amounts of the mineral silicon, and in a form that makes it easier for us to absorb this bone-supportive and connective tissue-supportive nutrient.t makes it easier for us to absorb this bone-supportive and connective tissue-supportive nutrient.