Sudden loss of appetite in an older adult

Older adults may eat less when they have an infection, mouth or dental discomfort, constipation, nausea, pain, low mood, or difficulty swallowing. A new medicine or dose change can affect taste, alertness, or the stomach. COVID-19 and Influenza can reduce appetite during an illness, while Gastritis, Gastroenteritis, Peptic Ulcer, or Hepatitis A may cause digestive symptoms. Sudden loss can also reflect a problem that is hard to describe, so changes in behaviour, alertness, urine, and drinking matter as much as the meal itself.

Note when the change began and review recent illnesses, medicines, dental problems, bowel movements, swallowing, and mood. Offer small portions more often, familiar foods, and fluids within easy reach; allow enough time and keep the person upright while eating. Never force food or drink, and do not crush or alter medicines unless a pharmacist confirms it is safe. Contact the person’s clinician promptly to discuss the sudden change and current health conditions.

Seek urgent help if the person is confused, unusually sleepy, faint, struggling to breathe or swallow, unable to keep fluids down, passing very little urine, or has severe pain, blood in vomit or stool, or a high fever. Arrange prompt review for ongoing reduced intake, yellow skin or eyes, repeated vomiting, or unintended weight change. Pancreatic Cancer is one possible serious cause of persistent appetite loss, but the symptom alone does not identify its cause.

Ask whether a medicine, infection, dental issue, swallowing problem, or mood change could explain the loss, how to support fluids and nutrition, and which signs require emergency care.