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 provide twice the recommended daily allowance of vitamin A?- provide more than 1/3 of the daily requirement of vitamin C?
- are a substantial source of beta-carotene, vitamin B6, iron, potassium and fiber?
- can significantly reduce the risk of certain types of cancer due to their high content of beta-carotene as studies have proven?
- come in about 400 different varieties?
- have a beta-carotene content which is directly related to the intensity of the yellow or orange flesh color?
- with purple flesh have the highest antioxidant activity?
- are a substantial source of dietary fiber which helps lower blood sugar by slowing the rate at which food is converted into glucose and absorbed into the bloodstream making them ideal for a diabetic diet?
- when eaten with the skin offer more fiber than a bowl of oatmeal?
- produce more pounds of food per acre than any other cultivated plant?
- are a tuberous root vegetable belonging to the same family of plants as the morning glory?
- are native to Central and South America?
- are one of the oldest known vegetables to man?
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