The elderly, infirm or convalescent patients are used to stewing soup with old hens, and even think that the nutrition of chicken soup is better than that of chicken. In fact, chicken soup is four times less nutritious than chicken. According to research, patients with hypercholesterolemia, hypertension, poor renal function, hyperacidity and biliary tract diseases should not drink more chicken soup. If you supplement it with chicken soup blindly, it will only further aggravate the condition and be harmful to your health. Therefore, the elderly should avoid drinking chicken soup often.