Reasons Why Cats Refuse Cat Food: Possible Causes

In everyday life, veterinarians often inquire about a cat's decreased appetite. Have you recently made any changes to your cat's usual diet? Has there been a significant change in your home, such as the addition of a dog or another cat? This could potentially scare your feline, leading to discomfort and a reluctance to eat. Have there been any changes in your cat's urination or defecation patterns? Are there loose stools? Has your cat been drinking more water than usual? During a physical examination, the vet will look for factors that might contribute to your cat's loss of appetite. They will inspect your cat's mouth for any dental issues that might be causing a lack of interest in food. They will also check your cat's body temperature to determine if there is a fever, infection, or other conditions that could lead to a decrease in appetite. Blood, urine, and fecal samples are typically checked to help the vet pinpoint the cause of the reduced appetite. Further diagnostic tests, such as Xrays or abdominal ultrasounds, may be necessary to understand why your cat is not eating.

Possible Causes May Include:

1. Kidney Disease – When the kidneys stop functioning properly.

As cats age, the risk of kidney disease increases. Consuming toxic substances, such as certain plants (like lilies or lily plants) or certain medications (like painkillers), can also lead to kidney disease. This can occur at any age. When kidney function begins to decline, toxins that are usually filtered out start to accumulate in the blood, making your cat feel nauseous and causing stomach ulcers.

2. Pancreatitis – Inflammation of the pancreas (an organ).

Cats typically do not vomit due to pancreatitis. They are more likely to stop eating, appear drowsy (lack energy), and become depressed.

3. Diabetes

Most cats with high blood sugar (hyperglycemia) or low blood sugar (hypoglycemia) actually have increased appetite. However, if your cat has other common diabetesrelated issues, such as pancreatitis and urinary tract infections, their appetite may decrease. An overdose of insulin (such as when two people in the household administer it) can cause hypoglycemia. Forgetting to give insulin can lead to high blood sugar. Low or high blood sugar can also occur if the wrong syringe type is used or if your cat's insulin needs change. If your cat enters a diabetes remission period, the insulin requirement may decrease, but it may increase if other medical issues, such as bladder infections, arise.

4. Hyperthyroidism – When there is an overproduction of thyroid hormones.

Hyperthyroidism is the most common endocrine disease in middleaged and older cats. It is caused by the overactivity of the thyroid gland, which secretes an excessive amount of thyroid hormones. Excess thyroid hormones lead to overactive metabolism, putting stress on the heart, digestive system, and many other organ systems. As hyperthyroidism develops, weight loss can occur despite normal or decreased appetite. While most hyperthyroid cats may have normal or increased appetite and still lose weight, some may actually experience a decrease in appetite, especially if they have other health issues.

Whenever you notice a change in your cat's behavior, such as a lack of appetite, it's essential to consult with a veterinarian. They can help diagnose any underlying conditions and assist your cat in recovering as quickly as possible.