If your cat is losing weight and showing a decreased appetite, it's crucial to investigate the underlying reasons. In many cases, this is due to an underlying health issue or dietary incompatibility. It’s recommended to take your feline companion to the vet for a thorough examination to identify the cause and rule out any serious medical conditions. Then you can adjust their diet accordingly.

Common Reasons for Feline Anorexia
1. Underlying Illnesses: One of the most frequent reasons why cats stop eating is sickness. This could be gastrointestinal issues like gastritis or enteritis, or more serious infectious diseases such as feline distemper (panleukopenia) or herpesvirus. If your cat suddenly refuses food, an immediate visit to the vet is essential. Prolonged anorexia can lead to dehydration, electrolyte imbalance, and further weight loss in cats.
2. Dietary and Environmental Changes: A sudden switch in cat food, or even a change in their food bowl, can cause your cat to become a picky eater. Food that is not fresh or unappealing to your cat can also result in food refusal. Additionally, oral issues leading to pain when swallowing can contribute to a loss of appetite. Other conditions like gastrointestinal discomfort or hairballs can also impact a cat’s willingness to eat.
3. Age and Specific Considerations: For kittens, infectious diseases are a primary concern if they refuse to eat. A kitten that stops eating for a few days could face life-threatening complications. It may be necessary to feed the kitten glucose supplements while immediately consulting with a vet, which may include intravenous nutrient support and anti-inflammatory medications. If a cat is simply picky, trying cooked chicken breast can help to entice them. In adult cats, the lack of appetite might be caused by ingested foreign objects, or internal organ problems requiring a full diagnosis and appropriate veterinary treatment.
Understanding these causes will help you address your cat's anorexia and weight loss effectively. Remember, early intervention and appropriate veterinary care are key to ensuring your cat returns to a healthy weight and appetite. If you have any concerns about your cat's health, it's always best to seek professional guidance.