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Hepatic lipidosis: why not eating is itself dangerous
The mechanism, in plain words
Cornell explains that when a cat is not eating, stored fat can move to the liver faster than it can be processed. This can contribute to hepatic lipidosis, a potentially fatal condition. Obese cats have a higher incidence, but other body conditions can be affected too. Appetite loss alone does not establish this diagnosis.
Which cats are most at risk
Cornell's hepatology specialist has seen the condition from three-month-old kittens to 25-year-old cats and in all body conditions - but notes the incidence seems much higher in obese cats. That has a direct practical consequence: an overweight cat that stops eating has the least room for "wait and see". It also means the one weight-loss strategy to never attempt is starving a cat slim. If your cat needs to lose weight, that plan belongs to your vet, at a pace that keeps food going in.
It usually follows something else
In more than 90 percent of cases, Cornell reports, hepatic lipidosis is secondary - it follows another condition such as obesity, diabetes, cancer, hyperthyroidism, pancreatitis, kidney disease or another liver problem. This is why treating the liver alone is never the whole job: the underlying driver has to be found and treated too. The common causes page covers the conditions appetite loss points to.
The signs an owner can see
- Food avoidance that looks almost fearful - Cornell describes cats that will not go near the bowl, and may sit back and salivate at the sight of food.
- Withdrawal - affected cats become reclusive.
- Jaundice - a yellowish tinge to the skin inside the ears and to the gums. This one is an emergency sign, not a watch-and-wait sign.
- Weight loss over the preceding days, often before anyone noticed the appetite change.
Cornell describes examination, blood tests, liver tissue analysis and possible ultrasound when hepatic lipidosis is suspected. These checks are done by a veterinarian; appetite loss alone cannot confirm the disease.
Treatment is feeding - early
Cornell describes prompt veterinary nutritional support, including feeding through a stomach tube, while the underlying cause is identified and treated. Some cats need continued tube feeding after going home. The veterinary team sets the food, amount and method and teaches home care; do not improvise assisted feeding. Recovery and duration vary with the individual cat.
Prevention is boring, and that is good
Keep weight-loss and diet plans under veterinary guidance. Observe actual food intake and contact the vet promptly when it changes. Missing log entries are missing information, not evidence that eating was normal.