The thyroid gland, located in your cat’s neck, uses dietary iodine to make thyroid hormones that help regulate important body functions including your cat’s:
Hyperthyroidism is a common feline endocrine disorder, most often diagnosed in older cats over age 10. Left untreated, hyperthyroidism can have serious, sometimes fatal, consequences on vital organs like the heart and kidneys. The good news is, this disease is highly manageable and can be controlled with proper veterinary care.
If your cat has hyperthyroidism, her thyroid gland will be enlarged and produce excessive amounts of thyroid hormone. Left untreated, hyperthyroidism can have serious, sometimes fatal, consequences on vital organs like the heart and kidneys. The good news is, this disease i,s highly manageable and can be controlled with proper veterinary care.
Signs of hyperthyroidism can vary in severity depending on how long a cat has been ill. If your cat exhibits any of the following signs, contact your veterinarian immediately:
Cats with chronic kidney disease and diabetes mellitus exhibit some signs similar to hyperthyroidism. Your veterinarian may also need to perform tests for these diseases to ensure an accurate diagnosis. If your cat has hyperthyroidism, her thyroid gland will be enlarged and produce excessive amounts of thyroid hormone.
Four potential options for managing cats with hyperthyroidism are:
The food your cat eats plays an important role in her overall health and well-being. Balanced nutrition is an essential part of an active, healthy lifestyle. For accurate diagnosis and treatment options, always consult your veterinarian and ask them to recommend the best food for your cat’s thyroid health.
Check out this video about how Prescription Diet cat food can help.
One of our staff authors prepared this article for you
Delectable chunks with tender tuna smothered in a rich gravy
These irresistible foods are specially formulated to support digestive health, nourish skin & promote a lustrous coat.
Precisely balanced nutrition for indoor cats with the delicious taste of savory minced chicken
Grain free, easy-to-digest food that is gentle on the stomach. Nourishes skin & promotes lustrous fur.
Delicious seared tuna paired with tender carrots in a mouthwatering sauce
Hill's Science Diet Adult Sensitive Stomach & Skin Chicken & Vegetable Entrée canned cat food provides nutrition for optimal digestive & skin health.
Improves Everyday Ability to Get Up & Go
Supports brain health and beautiful fur in mature indoor cats
Supports digestive health, nourishes skin and promotes a lustrous fur
Carefully made, gourmet daily nutrition. Tasty chunks with Salmon & Tuna in a decadent gravy. Supports digestive health, nourishes skin and promotes a lustrous fur.
Highly digestible food that is gentle on the stomach. Nourishes skin & promotes lustrous fur.
Delectable chunks with tender ocean fish smothered in a rich gravy
Supports the health of the whole urinary system with optimal levels of magnesium
With delicious chunks in a decadent gravy
Precisely balanced nutrition with the delicious taste of savory minced chicken to help fuel the energy needs of cats during the prime of their life
With delicious chunks in a decadent gravy
Natural fiber comfortably reduces hairballs
Supports the health of the whole urinary system with optimal levels of magnesium
With delicious chunks in a decadent gravy
Supports digestive health, nourishes skin and promotes a lustrous fur
Discover the benefits of Hill's line of kitten foods and how they provide complete and balance nutrition for growing kittens.
Learn what catnip is, and whether or not it is safe to give to your cat and any side effects associated with catnip.
Learn helpful tips for locating a missing or runaway cat, including methods for searching and resources to consider when trying to locate them.
Discover how to make three creative DIY cat toys out of household items. Cats can get bored very easily, which is why you need to keep her interest.
Learn how meal planning, exercise and activity can help your overweight cat get to a healthy and happy weight.
If your cat is in distress and you suspect she's choking, learn how you can help her with the Heimlich maneuver, as well as prevent future choking issues.
Learn which types of products and supplies are safest for your kitten, including specific kinds of litter, food, shampoo, carriers, collars and toys.
Can cats eat rice? And can cats eat rice to help with digestive issues? Read on to find out if rice can have a role in your cat's meal plan!
Learn helpful info about gingivitis in cats, the most common oral disease among cats, including what it is, causes, symptoms, treatment & prevention tips.
Learn how the history behind different registries of cat breeds, how each registry differs in their classifications, and if new breeds are accepted.
When a cat wants attention, she'll pull out all the stops until she grabs your interest, such as these seven classic behaviors guaranteed to distract you.
Learn about types of hernias in cats, causes of this condition, possible symptoms and treatment options (including combining it with spaying your cat).
Worried that your cat may have come in contact with ticks? Learn how to identify a tick bite and steps for safely removing a tick from your cat.
Learn all about bladder stones in cats: Specific types of stones, clinical symptoms your cat might be showing, and typical treatment options from a vet.
Learn about the warning signs, symptoms, and treatments of urinary tract disease in cats and the affect on your cat's health and well-being.
Learn how to identify causes of aggression in your cat, how you can help calm them down or diffuse an aggressive situation, and when a vet visit is needed.
Read our Top 10 Health Tips for your senior or aging cat, specifically tailored for the special health needs of a mature cat.
Discover some vet-recommended advice about some common cat digestive problems, including how to deal with upset stomachs, worms, hairballs, and more.
Learn the key indicators that your cat could be dealing with lungworms, such as coughing fits, and how they are treated.
Have you ever wondered if cat's like music? And if so, what kind? Check out this article that digs into the science behind your cat's taste in music.
Our low calorie formula helps you control your cat's weight. It's packed with high-quality protein for building lean muscles, and made with purposeful ingredients for a flavorful, nutritious meal. Clinically proven antioxidants, Vitamin C+E, help promote a healthy immune system.
Our low calorie formula helps you control your cat's weight. It's packed with high-quality protein for building lean muscles, and made with purposeful ingredients for a flavorful, nutritious meal. Clinically proven antioxidants, Vitamin C+E, help promote a healthy immune system.
©2025 Hill's Pet Nutrition, Inc. As used herein, denotes registered trademark status in the U.S. only; registration status in other geographies may be different. Your use of this site is subject to the terms of our Legal Statement. About our Ads. Cookie Consent Tool