This question needs to be answered in two parts. First, do you only eat sweet potatoes and nothing else? How much are you going to eat? Second, do you take sweet potato as a staple food and eat it with other foods?

Let's analyze it below.

First, if we simply eat sweet potatoes, then we look at the nutritional components of sweet potatoes, which are rich in protein, starch, cellulose, pectin, amino acids, vitamins and various minerals. The starch content is still quite high, which fully shows that sweet potato is coarse grain and can replace staple food.

Moreover, a large amount of starch in sweet potatoes can make people feel full after eating.

Knowing the nutrients depends on how many sweet potatoes you eat a day. If you really want to lose weight, in an extreme way, you only eat sweet potatoes, and you only eat one sweet potato at a time, and nothing else, so your nutritional intake is less than your nutritional expenditure, which may really make you thin, two kilograms a week, and maybe ten kilograms a month.

However, I want to tell you that this way is extreme and cruel. You must resist the temptation of other foods, which cannot be implemented for a long time. After a long time, the nutrition is unbalanced, and the body function is bound to be destroyed.

And if you have a good appetite, you can eat a lot of sweet potatoes and eat enough. After all, the nutritional components of sweet potatoes are quite comprehensive and the starch content is high. As a result, you may not lose weight, or even gain weight.

In addition, I think the way you want is to replace coarse grains with sweet potatoes and eat them with other dishes to lose weight. It's okay to eat sweet potatoes as the staple food, but how much you can lose depends on how much other food you eat. If you can control the total food intake within the range of less than your daily calorie consumption, there will be a gap in energy supply. Naturally, you can be a little thinner. As for how much you can lose, it's really hard to say. If you can cooperate with a certain amount of exercise, such as one hour a day, moderate intensity, then you can stick to it. It is also possible to lose about one catty a week and five catties a month.

In short, you can't lose weight by a single food. The best way is to combine reasonable diet with exercise, reduce fat and gain muscle slowly for a long time, and let the body reach its best state.