Signs of Loss of Appetite

Loss of appetite is a symptom rather than a diagnosis. It may occur for a short time during an infection, fever, nausea, pain, constipation, or changes in taste and smell. Some people with COVID-19, Influenza, Gastroenteritis, Gastritis, or Hepatitis A notice reduced appetite alongside other symptoms. Low mood, anxiety, grief, dental problems, swallowing difficulty, medication effects, or an underlying digestive condition can also reduce interest in food. A person may eat smaller portions, feel full quickly, leave food unfinished, or forget meals. Notice whether drinking is also difficult and whether there is unplanned weight change, vomiting, abdominal pain, diarrhoea, or low mood.

Take small, regular sips of water or an oral rehydration drink if illness has reduced eating. Try small portions more often, with foods that are familiar, soft, or easy to prepare; add nourishing options such as soup, yoghurt, eggs, or a smooth meal if they suit you. Eat in a calm setting and keep a simple record of food, fluids, symptoms, and medicines. Avoid forcing food or relying on supplements without advice. A clinician or dietitian can help choose an approach if eating remains difficult or a medical condition is suspected.

Arrange medical review if reduced appetite persists, keeps returning, or comes with unplanned weight loss, ongoing vomiting, persistent diarrhoea, trouble swallowing, or significant abdominal pain. Seek urgent help for severe dehydration, fainting, confusion, vomiting blood, black stools, yellowing of the skin or eyes, chest pain, or breathing difficulty. Prompt support is also appropriate when low mood, loss of pleasure, or thoughts of self-harm accompany poor appetite. Children, older adults, and people with long-term conditions can become dehydrated or undernourished more quickly.

Ask what may be causing the appetite change, whether your medicines or symptoms need review, and which tests could help. Ask how to protect hydration and nutrition, what weight or symptom changes to monitor, and whether a dietitian or mental-health professional would be useful.