Patients with a cold can drink milk in moderation. For a cold, it is advisable to eat a light diet and avoid spicy, stimulating, and greasy food. However, it is appropriate to consume some protein-rich foods, such as lean meat and egg whites. During a cold, you can drink a small amount of milk, but it should not be consumed in large quantities. Since milk contains a lot of protein, and the immune system of patients with a cold is weakened, their absorption capacity is reduced. Drinking too much milk can be hard to absorb, thereby increasing the burden on gastrointestinal functions, making it easier to produce phlegm. Therefore, it is not recommended to drink a lot of milk if the cold is severe.