What is the harm of insufficient protein intake during weight loss?

The so-called protein has three essential nutrients for our body. They are "fat, sugar, and protein." What role does protein play as one of the three major nutrients?

Protein In our bodies, about 60% is water, and about 20% is protein. Protein has 20 kinds of amino acids. These amino acids are complex combinations to form muscles, skin, hair, nails, internal organs and immune bodies. Most organs of the body are formed through protein.

Protein is found in most foods, especially in meat, fish, eggs, soy products and dairy products, where the protein content is particularly high.

(Editor in charge: Tian Tian)