The summer squashes include yellow squash, yellow crookneck, and pattypan, as well as zucchini, which is so numerous it gets its own entry! Tender, yellow summer squash provides vitamins A and C; the B vitamins B6, riboflavin, niacin, and folate; and the minerals potassium and magnesium. They are a good source of fiber and, at 93 percent water, low in calories and helpful for staying hydrated in the summer heat. They also provide lutein and zeaxanthin, two carotenoids that help preserve vision.Nutritional Facts
One cup of sliced raw summer squash provides 12 calories, 5.2 g carbohydrate, 1.2 g protein, 0.4 g fat, 2.4 g dietary fiber, 440 IU vitamin A, 10 mg vitamin C, 30 mcg folic acid, 276 mg potassium, 2 mg sodium, 42 mg phosphorus, 28 mg calcium, and 28 mg magnesium.