You can drink protein powder during fat reduction. Protein powder actually belongs to plant protein, and there is no fat or starch in it. After protein is ingested, it is decomposed into amino acids in the digestive tract before it can be absorbed by the human body. The absorbed amino acids are assimilated by the body to synthesize the required protein, which is not used to synthesize fat and has no fattening effect. However, it should be noted that the human demand for protein is generally per kilogram of body weight 1 gram. If the intake is too high and the absorption is insufficient, it will affect the function of the digestive tract.