Old Cat Losing Weight

Weight loss may be a sign of an illness. Talk to your vet. Older cats can develop thyroid and kidney disease, which can cause weight loss. It is important that you consult your veterinarian immediately if your cat is experiencing weight loss.

Because cats come in a variety of sizes, weight alone won’t tell you how big or small they are. Examining your pet carefully is the only way to determine if they are overweight. You might be better off following one of the senior diets. They are lower in calories, and less likely to cause weight gain.

Although protein restriction is not beneficial for healthy cats it can be helpful for cats suffering from kidney disease. Ask your vet for help if your cat has kidney disease.

Your vet should be consulted if your cat is experiencing weight loss. They can also discuss senior nutrition options. Your vet might suggest special foods. If your cat is not eating well, you can try to increase the amount of food, or warm it up with sardines or pilchards.

Common Problems

Arthritis in Older Cats

While joint function declines with age, arthritis is very common. However, a visit to your vet is worth it. Your vet will evaluate your pet and recommend weight control. The long-term treatment of arthritis in cats can be more difficult than for dogs. However, there are more drugs now available.

Brain Deterioration

Brain deterioration in cats can be similar to dementia. This can have a similar impact on their behavior. Your vet should be consulted if your cat behaves strangely or seems disinclined or unable to greet you at home.


It is a very common reason that owners take their cat to the vet. There are many causes that can occur, some of them treatable, and some of them, unfortunately, not.

Liver Disease or Kidney Disease

A pet with increased thirst that lasts more than a few days should be examined. You could have liver disease or kidney disease. You cat may even be diabetic

Feline Infectious Perioditis

FIP is a virus that causes wasting in cats. It’s most common in cats who have been raised in catteries. FIP can cause cats to appear sick and have a fever that won’t respond well to antibiotics.

Anxiety, Stress, Or Depression

Stress can cause cats to eat less. Cats may become upset by noise, other animals, dirt, and proximity to the litter box.

Gastrointestinal Problems

Cat weight loss can be caused by a number of conditions. Other symptoms include vomiting, diarrhea, loss of appetite, and nausea.


This condition, which can be caused by an inability to make insulin or an impairment in its response, causes cats to lose weight and often have a change of appetite. Diabetes can also cause cats to drink more water than normal, have a slower metabolism, and suffer from sweetly scented breath.

Intestinal Parasites

Intestinal parasites are also known as worms and may cause unintentional weight loss in your cat. These parasites can cause diarrhea, bloating and vomiting.


It could be a simple problem like a sore tooth. Other signs that your cat may have a problem with their teeth include drooling or pawing at the lips. The problem can also be caused by severe gingivitis or mouth ulcers.

Treatment And Home Care For Underweight Cats

There are a number of options available to help your cat lose weight. Weight loss in older cats can be managed, if not curable.

A diet that is easy to digest may be recommended for cats with inflammatory bowel disease. If the food allergy causes your cat to lose weight, it is possible for them to recover.

Is it normal for an older cat to lose weight?

Cats’ energy requirements decrease by around three percent per year after the age of ten or eleven. Adult cats, unlike kittens who require high calorific contents to grow, need less calories to live. Cats reach ten years old and their calorific requirements increase.

Senior cats will have higher energy needs if they are fed a maintenance diet for cats under ten years old.

  • Muscle loss
  • Energy availability reduced
  • Reduced fat

Why do older cats lose weight?

Senior cats require more protein than senior cats, and young adult or mature cats should consume around five grams of protein per kilogramme of their body weight daily.

Senior cats need to increase their intake of fat and protein by as much as 25% in order to maintain the same weight. However, this is not always the case. Other factors could affect your senior cat’s appetite.

Fatigues of the elderly cat that causes weight loss

Senior cats are most likely to develop one of these diseases. While some of them can be more severe than others, each needs to have at least one of the following:

  • Therapeutic care
  • Vet intervention
  • A change in diet

Therapeutic Care

To keep their health and well-being, many older cats require constant medication.

Therapeutic care could include:

  • Insulin is used to treat diabetes
  • Vitamin supplements
  • Joint care medication

A Change In Diet

You can ask your vet to help you determine the dietary requirements of your cat. However, you should switch to high-quality foods as soon as you can.

Old age is linked to degenerative diseases

The most vulnerable parts of an older cat’s body are those that lose efficiency with age.

  • Digestive system
  • Gums and teeth
  • Muscles and joints
  • Coat and skin
  • Urinary tract

How to combat weight loss in older cats

You can help if you’re certain your cat isn’t suffering from a serious condition or is just losing weight due to age.

You can make a big difference in your feline’s life by changing their diet to meet their nutritional needs.

  • Maintaining muscle mass
  • Improving energy levels
  • A healthy coat is essential
  • Healthy organ function

Untamed Can Help Senior Cats Lose Weight

Untamed cat foods tick all the boxes when it comes to keeping senior cats healthy and happy.

Is it normal for an old cat to lose weight?

As they age, cats begin to experience changes and slowdowns. A gradual decrease in weight is one of the most obvious signs. The natural process of older cats losing muscle mass can be reversed with proper nutrition.

Why is my elderly cat losing weight but still eating?

An older cat may lose weight, but not stop eating. This is an indicator of hyperthyroidism. This is a very common and treatable condition.

What is the age of a 20-year-old cat?

Recent years have seen a shift in feline life-stages and ages. Cats are now considered to be old once they turn 11 years. Senior cats are those between 11-14 years of age, and super-senior cats, 15 years or more. It can be helpful to understand the age of older cats when caring for them.

Why is my 18-year-old cat so skinny?

There are several well-recognized causes for weight loss in older cats, including chronic renal disease, diabetes, hyperthyroidism and exocrine Pancreatic Insufficiency. These conditions can be easily diagnosed and confirmed by routine laboratory testing and physical examination.

What to do if your cat starts losing weight quickly

To see a veterinarian immediately if your cat isn’t eating. Cats that have low-grade nausea or a loss of appetite often experience a loss of appetite.

She also said that weight loss can be a sign of disease two to three years before symptoms appear. You should schedule an appointment with your veterinarian immediately if your cat is losing weight.


Even if you aren’t actively trying to help your cat lose weight or show signs of undernourishment, it can still be very serious. Sometimes it’s as simple as your cat not eating enough calories to support its lifestyle. Other times, there may be a medical problem.

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