Radish is one of the nutritious root-vegetables featured in both raw salads as well as in main recipes. Snacking on radishes can help you reach your daily vitamin C intake goal. For their size, radishes have a high vitamin C content. A 1/2-cup serving offers 8.6 mg, or 14 percent of the recommended daily intake. Vitamin C works in the body to rebuild tissues, blood vessels and maintain bones and teeth.