In general, winter squash are high in beta carotene which is converted to Vitamin A in the body. Acorn squash is also a good source of calcium. Butternut and hubbard are very rich in beta carotene. One cup of either will give you all the vitamin A you need for a day and about one third or your vitamin C needs. Winter Squashes are low in fat and high in complex carbohydrates which make them excellent energy sources.
Squashes are also rich in potassium.
Winter squash has more natural sugars, carbohydrates, and vitamin A than summer squash. According to Chinese medicine, squash helps to reduce inflammation. Store winter squash out of direct light, and at a cool stable temperature. Different varieties of winter squash store for different lengths of time, with Hubbards, Kabochas, and Buttercups lasting the longest and Acorns and Butternuts the shortest. Selection Look for winter squash that is firm and without severe blemishes.