You can eat the following foods to prevent cold in winter: First, yogurt, yogurt is rich in lactic acid bacteria, it can promote the growth of white blood cells in the blood, so as to achieve the role of cold prevention. Beef, which is rich in zinc, has the function of helping the body to enhance immunity. This is due to its ability to promote the growth of white blood cells, which in turn helps the body to prevent viruses, bacteria and other harmful substances, and beef is also an important source of zinc supplementation for the body. Garlic has long been known to have anti-toxic as well as antiseptic properties. It has more than that, as it can reduce the chance of catching a cold by 2/3, and if chewed regularly, it can reduce the probability of colon and stomach cancer.