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Breakfast goes untouched, lunch is only half eaten, and by the evening all hunger is gone. Temporary loss of appetite is something everyone experiences — during stress, heat, or an infection it is entirely normal. But when appetite is absent for weeks and you are losing weight unintentionally, it is worth taking a closer look. A frequently overlooked cause: many medications suppress appetite as a side effect.
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Unintentional weight loss of more than 5% in 6 months, or persistent vomiting, should be investigated by a doctor without delay.
Loss of appetite means that the natural sensation of hunger is absent or significantly reduced. In the short term this is harmless — during infections, stress, or hot weather the body naturally dials down appetite.
| Medication | Why it suppresses appetite | What helps |
|---|---|---|
| Metformin | Nausea and loss of appetite especially in the first few weeks — the most common side effect | Take with food; increase dose slowly |
| Semaglutide (Ozempic/Wegovy) | Deliberately suppresses hunger via GLP-1 receptors in the brain — can sometimes be too strong | If appetite suppression is excessive: adjust dose with doctor |
| Iron supplements | Nausea and stomach upset suppress appetite | Take with orange juice, not on an empty stomach |
| Citalopram, escitalopram | Appetite suppression particularly in the first few weeks | Usually resolves after 2–4 weeks |
| Chemotherapy agents | Severe loss of appetite is a common side effect | Discuss supportive therapy with your oncologist |
Gastritis, gastric ulcers, irritable bowel syndrome, or food intolerances can dampen appetite. Heartburn and bloating also make eating unpleasant.
Depression, anxiety disorders, grief, and chronic stress are common causes. Loss of appetite is one of the diagnostic criteria for major depression — it frequently accompanies fatigue, sleep problems, and low motivation.
During acute infections (cold, flu, stomach bug), loss of appetite is normal and resolves as the fever subsides.
Hunger and thirst sensations diminish with age. At the same time, the number of medications increases — a double risk factor for malnutrition. Check your combination with the brite interaction check.
Five to six small meals per day rather than three large ones. Prioritise what you feel like eating — every calorie counts. Keep nutrient-rich snacks to hand (nuts, avocado, cheese, yoghurt). Smoothies and soups are good alternatives when solid food feels difficult. Bitter compounds can stimulate appetite: gentian, artichoke, wormwood, or dandelion as a tea or drops.
A short walk before a meal stimulates appetite. Eating together with others — shared meals have been shown to increase food intake. Drink between meals, not with them.
Metformin: taking it with food (not on an empty stomach) and increasing the dose slowly reduces nausea significantly. Iron supplements: take with orange juice (vitamin C enhances absorption). For persistent loss of appetite: speak to your doctor about a possible alternative preparation. Never stop medication on your own.
Digital medication plan: Did the loss of appetite start with a new medication? Record all preparations to spot the connection.
Interaction check: Taking several appetite-suppressing active substances at once? brite shows you the combination instantly.
Dose reminder: Taking metformin with food — the reminder helps you keep to the right timing.
Register for free nowbrite helps you identify appetite-suppressing medications and maintain the right timing for your doses.
