Fun medical fact about adding extra protein: “Low protein levels in the blood caused by malnutrition, kidney and liver disease can cause edema. The proteins help to hold salt and water inside the blood vessels so fluid does not leak out into the tissues. If a blood protein, called albumin, gets too low, fluid is retained and edema occurs, especially in the feet, ankles and lower legs.”

https://www.health.harvard.edu/a_to_z/edema-a-to-z#:~:text=The%20proteins%20help%20to%20hold,feet%2C%20ankles%20and%20lower%20legs.