Fatty liver is one of the most common diseases in adult cats. It is characterized by an excessive accumulation of fat in the liver, causing it to stop functioning properly. The liver is key to digestion, metabolism, and the elimination of toxins, so when it fails, the entire body is affected.

The most important thing you need to know as a caregiver is that this disease can be fatal if it’s not treated in time, but also that with early diagnosis and appropriate intensive treatment, many cats do recover.

At Balmesvet, we want to offer you a comprehensive guide that will help you understand what hepatic steatosis is, how to recognize its signs, why it is an emergency, and what you can do to prevent it.

What is hepatic lipidosis in cats (fatty liver)?

Hepatic steatosis, also known as “fatty liver,” occurs when a cat stops eating and its body begins to use stored fat for energy. That fat is directed to the liver, which is unable to metabolize it in large quantities. The result is that liver cells become saturated, the liver enlarges, and it gradually stops functioning.

Although dogs and humans can also develop fatty liver disease, cats are particularly prone to it due to their unique metabolism. The feline liver has a lower capacity to process and utilize fats efficiently, and it also requires certain essential amino acids (such as taurine or arginine) to function properly. This means that after just a few days of not eating, cats are quickly at risk.

Why does hepatic lipidosis occur? Main risk factors

In most cases, hepatic lipidosis appears after a period of anorexia (loss of appetite). The triggers can widely vary, but the most common are:

•  Stress or environmental changes.
•  Sudden change in diet.
•  Underlying diseases.
•  Obesity as a key predisposing factor.

It is important to differentiate between primary fatty liver (when it appears after not eating with no other obvious causes) and secondary fatty liver (when it is the result of another disease).

Symptoms of hepatic lipidosis at home: signs to watch for

One of the major challenges of this disease is that the symptoms can go unnoticed in the beginning. The signs to watch out for are:

• Loss of appetite for more than 24–48 hours.
• Rapid weight loss.
• Weakness and apathy.
• Isolation and behavioral changes.
• Vomiting.
• Jaundice (yellowing of the eyes, gums, or skin).

If you notice any symptoms, don’t hesitate to call your vet or make an appointment to take your cat in immediately.

Dangerous myths about hepatic lipidosis that increase the risk

• “If my cat is chubby, it’s okay if he goes without food for a day.”
• “She’ll eat when she’s hungry.”
• “There’s no need to rush to the vet if she hasn’t eaten for just a couple of days.”

These beliefs are very dangerous and increase the risk of the cat getting treatment too late.

Diagnosis of hepatic lipidosis: testing and confirmation

The diagnosis requires veterinary tests, since the symptoms alone are not always conclusive. At Balmesvet we have:

• Blood tests.
• Imaging tests.
• Ultrasound-guided punctures.
• Liver biopsy in specific cases.

The advantage of having a 24-hour laboratory is that we can get results in a matter of minutes and start treatment as soon as possible.

Treatment of hepatic lipidosis: hospitalization and nutritional support

In most cases, treatment requires hospitalization. The key is to re-nourish the cat in a carefully controlled way.

• Intensive hospitalization with fluid therapy and pain management.
• Tube feeding.
• Intensive Care Unit (ICU) in severe cases.
• Treatment of the primary disease, if present.

Recovery and home care after hepatic lipidosis

Discharge from the hospital is only the first step. The guardian plays a crucial role:

• Feeding tube management.
• Strict specific diet.
• Daily observation of clinical signs.
• Regular check-ups with your veterinarian.
• A calm, stress-free environment.

Prevention of hepatic lipidosis: advanced guidelines

• Don’t let your cat go more than 24 hours without eating.
• Make gradual changes to their diet.
• Monitor their weight and prevent obesity.
• Reduce stress at home.
• Take them for regular check-ups, especially if they are obese or senior cats.

The value of a referral veterinary hospital for your cat

Not all veterinary facilities have the necessary resources to treat severe fatty liver. At Balmesvet, we have:

• A gold-ranking as a Cat Friendly hospital
• Exclusive hospitalization for cats
• 24-hour feline ICU
• 24-hour in-house laboratory
• A team specialized in feline medicine with Fear Free certification.

Fatty liver is a serious disease, but can be cured if treated quickly. The message is clear: if your cat does not eat for more than a day, do not wait. Take them to the vet as soon as possible.

At Balmesvet, as a leading feline medicine hospital in Barcelona, we are prepared to diagnose, treat, and accompany you every step of the way.

Need help? Call us or make an appointment. 24/7 emergency services available.