Both cassava and sweet potato have their own unique nutritional value. It is difficult to simply say who is more nutritious. The following are their respective characteristics:

1. Cassava roots are rich in starch, protein, fat, minerals and other nutrients, among which the starch content is particularly rich, more than that of sweet potatoes. In addition, cassava is rich in potassium and can be used as a food crop in tropical developing countries.

2. Sweet potato is also regarded as a nutritionally balanced food, rich in carotene, vitamin C, calcium, magnesium, potassium, iron and other nutrients, among which carotene is relatively rich.

Therefore, from a nutritional perspective, both cassava and sweet potato have their advantages, and the specific choice can be determined based on personal nutritional needs and taste preferences. In addition, whether it is cassava or sweet potato, it is not advisable to consume excessive amounts to avoid causing physical discomfort.