Can I drink beer during flu season?
Generally speaking, flu refers to influenza. Drinking beer during the flu is not recommended. The analysis is as follows:

During an influenza infection, patients already experience symptoms of upper respiratory tract infection, such as coughing, nasal congestion, and runny nose. Alcohol in beer is a relatively irritating substance; consumption may irritate the upper respiratory tract, leading to congestion and swelling of the mucous membranes in the throat and trachea, thereby worsening symptoms such as coughing and sputum production. Additionally, alcohol may cause systemic vasodilation, resulting in discomforts like fever and headache, further affecting rest and recovery in patients with the flu.
Furthermore, the metabolism of alcohol in the body requires the involvement of the liver and kidneys. The liver and kidney function of patients with influenza may already have been somewhat affected. Consuming alcohol at this time would further increase the burden on these organs, thus affecting the clearance of the influenza virus and the body's recovery process.
Therefore, patients with influenza should avoid alcohol consumption during treatment in order to maintain good lifestyle and dietary habits that promote recovery.