According to Harvard Health, sweet potatoes are an excellent source of a number of vitamins and minerals, including A, B6, C, potassium, and fibre. They also contain disease-fighting phytochemicals in high concentrations. The United States Department of Agriculture estimates that a single cooked medium-sized sweet potato (with the skin on) has nearly four grammes of fibre.
Carrots are recommended not only for the vitamin A they contain, which helps maintain healthy eyesight, but also for the fibre and water they contain. The United States Department of Agriculture reports that a cup of chopped carrots has about 3.5 grammes of fibre and 113 grammes of water.
Although not everyone enjoys the earthy flavour of beets, there are many benefits to including these vibrantly coloured roots in your diet if you do. According to the USDA, a half cup of cooked beets contains nearly two grammes of fibre.