Sweet potatoes are a representative alkaline food because they contain beta-carotene and vitamin C, and in particular, they were selected as the three major red-yellow vegetables that prevent lung cancer. These days, there are various types of sweet potatoes, such as chestnut sweet potatoes, pumpkin sweet potatoes, purple sweet potatoes, and orange sweet potatoes. Oriental medicine has the effect of strengthening the spleen and stomach, relaxing the blood, and warming the five intestines. Fiber improves bowel movements and is a good ingredient for diet. However, since the main ingredient is sugar, it is recommended to avoid people suffering from obesity, high blood pressure, diabetes, and heart disease. Today, it's baked sweet potatoes in the oven. You can also make delicious roasted sweet potatoes at home.