Squash is an excellent source of vitamins A and C. A one-cup serving of winter squash provides about half of the daily requirement of vitamin C, and 4.5 times the daily requirement of vitamin A.
One cup of cubed winter squash contains about 80 calories, virtually no fat, and very little sodium.
Squash is a very good source of potassium and manganese; and a good source of calcium, magnesium, Vitamin E, Thiamin, Niacin, Vitamin B6, and Folate.
Squash is high in fiber. It can help give people the sensation of feeling full, without having consumed a lot of calories.
The pigments that give squashes and pumpkins their deep yellow and orange colors may help to protect humans against some forms of cancer.
Summer squash do not have much vitamin A and have lower levels of most nutrients than winter squash. However, summer squash are a good source of vitamin C and dietary fiber, and are a very low-calorie food with about 35 calories per cup.