When to worry about loss of appetite with COVID-19

COVID-19 can reduce appetite through fever, tiredness, nausea, altered taste or smell, sore throat, cough, or changes in the way food feels. Reduced eating is more concerning when it occurs with poor fluid intake, repeated vomiting, diarrhoea, or a worsening general condition. Appetite alone cannot confirm the infection, because many illnesses and medicines can cause the same symptom.

Rest and take frequent small sips of water or an appropriate rehydration drink. Choose soft foods in small portions when you feel able, and try cool or bland options if smell or taste is unpleasant. Keep track of whether fluids stay down and whether you are passing urine normally. Follow local infection-control advice and contact a clinician about testing, treatment, or medicines, especially if you have conditions that increase the risk of severe illness.

Arrange prompt medical advice if appetite remains poor with very little drinking, worsening fever, persistent vomiting or diarrhoea, marked weakness, or signs of dehydration such as dizziness and reduced urination. Seek emergency help for severe difficulty breathing, chest pressure, new confusion, bluish or grey lips, or unusual difficulty staying awake. Do not wait for appetite to return if breathing or alertness is changing.

How can I tell whether I am becoming dehydrated? Which drinks and foods are suitable for me? Do my medicines need adjustment if I am eating less? Should I be tested or assessed for COVID-19, and which symptoms mean I should seek emergency help?