How long can you live with low-protein edema depends on the cause and treatment of low-protein edema, which mainly includes nephrotic syndrome, cirrhosis, malnutrition and other causes. 1. Nephrotic syndrome: heredity, infection, immunity, drugs, environment and other factors may induce nephrotic syndrome, clinically, there will be a large amount of urinary protein, and with the gastrointestinal tract after the kidney disease also appears to be uncomfortable, the intake of protein will be reduced, so there will be a low-protein situation, the treatment is not timely on the renal function will cause serious impact. 2. Cirrhosis: most of the cirrhosis is caused by alcoholic liver disease, viral hepatitis, cholestasis, etc. As the liver synthesis reserve capacity of patients with cirrhosis decreases, the body synthesizes protein insufficiently, and there is a low protein with edema, and the survival rate of this condition is determined by whether the liver damage continues to progress. 3. Malnutrition: malnutrition is caused by malabsorption, excessive consumption of nutrients, insufficient intake and so on, so there will be hypoproteinemia, such a situation at the same time the serious ones will appear edema phenomenon, but timely correction generally has no effect on life expectancy. It is recommended to go to the hospital for examination and ask the doctor at the regular hospital.