Whether you can drink milk when you have a cold depends on the specific condition. For those with a mild cold and no significant gastrointestinal symptoms, it is appropriate to drink warm milk. Since milk is rich in nutrients, containing high-quality protein, calories, amino acids, etc., it can be quite beneficial for the body's recovery. It also helps alleviate cold symptoms, especially easing symptoms like general body aches and fatigue. However, caution is needed for cold sufferers who have obvious gastrointestinal dysfunction, particularly those with gastro-intestinal type colds displaying nausea, vomiting, or diarrhea. It is advised not to drink milk in such cases to avoid worsening the gastrointestinal dysfunction and potentially prolonging the recovery period. Additionally, it is important to avoid taking milk with other medications during a cold, as it might affect the efficacy of the medications.