Not much food during the cold also gained 4 pounds, it may be due to the cold during the activity is smaller, the body consumption is smaller, so lead to fat 4 pounds. But not much food during the cold also gained 4 pounds, may also be due to disease factors, so we should pay attention to timely to the hospital to improve liver function, kidney function, electrocardiogram and other tests, clear cause of obesity.1, viral myocarditis: if the cold complication of viral myocarditis, it will lead to the patient to appear water and sodium retention caused by the whole body swelling, when the above situation occurs when the weight will be increased. If the above situation occurs, you should go to the hospital in time to improve the electrocardiogram, cardiac ultrasound and other tests, and under the guidance of the doctor to use diuretics, vasodilators and other anti-arrhythmic drugs for treatment, if the symptoms are more serious, you may also need to install a pacemaker; 2, nephrotic syndrome: if a cold induced nephrotic syndrome, the patient will also appear to weight gain, when the patient should be actively pursued. In order to prevent the disease from progressing, glucocorticoid drugs such as prednisone can be used. If the disease has developed into acute renal failure, dialysis treatment may be required; 3. Cirrhosis: If the patient has cirrhosis of the liver, it may be aggravated by a cold and edema may occur, resulting in weight gain. At this time, the patient should actively protect the liver, reduce enzymes, yellowing and other treatments, such as glucuronolactone, compound glycyrrhizin tablets, etc., if necessary, intravenous infusion therapy, such as hepatocyte growth promoter, reduced glutathione, etc., but also need to orally lower the portal pressure of drugs, such as propranolol. Therefore, if the body does not lose weight during a cold, but gains weight instead, it cannot simply be considered a common cold, but may be due to a cold induced by the onset of other diseases. The patient should go to the hospital in time, under the guidance of specialists to improve the relevant examination to clarify the cause, and according to the different causes of the disease to take appropriate measures.