Cat Hyperthyroidism: Signs, Vet Care and Acupuncture

Cat condition guide · Endocrine and heart

Cat Hyperthyroidism: Signs, Vet Care and Acupuncture

Weight loss with a big appetite in older cats: vet diagnosis, treatment and the limited role of acupuncture.

Prepared by the PetAcu Team · Last updated October 7, 2026

This guide is educational and does not replace a veterinary diagnosis. Acupuncture is used alongside, not instead of, conventional care, and the evidence differs from condition to condition. See our Medical Disclaimer.

See a veterinarian first

Contact your veterinarian or an emergency animal hospital immediately, and do not delay care to try acupuncture, if:

  • Your cat is breathing fast or with an open mouth.
  • Your cat is collapsing, very weak or suddenly blind.
  • Vomiting is repeated or your cat stops eating.
  • Your cat has a very fast heartbeat and seems distressed.

This list is not complete. Cats hide illness, so if you are worried, call your veterinarian.

What is hyperthyroidism?

Hyperthyroidism is an overactive thyroid gland and is common in older cats. It speeds up the body, causing weight loss despite a good appetite, restlessness and a fast heart rate. It can also raise blood pressure and strain the heart and kidneys.

Signs to look for

  • Weight loss with a hungry appetite
  • Restlessness, loud meowing
  • Vomiting or diarrhea
  • Increased thirst and urination
  • Unkempt coat

How veterinarians diagnose and treat it

Diagnosis uses blood tests, and blood pressure and heart checks are also important. Treatment options include daily medicine (methimazole), radioactive iodine, surgery and a prescription diet, chosen with your veterinarian. Kidney function is monitored.

What acupuncture can and cannot do

Acupuncture does not control the thyroid. A few practitioners use it as supportive care for comfort, and it should never replace thyroid treatment.

What the evidence says: There is no good evidence that acupuncture treats hyperthyroidism in cats.

Results vary from cat to cat and cannot be promised. To find a practitioner, see cat acupuncture near me in our directory.

Acupuncture points for cats commonly discussed for this condition

These feline acupuncture points are named in traditional charts for the signs described on this page. Each guide gives the location, traditional indications and safety notes. Listing a point is not a promise that it will help, and points are chosen by the practitioner for each cat.

See all points on the cat acupuncture points chart.

Next steps and resources

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Frequently asked questions

Can acupuncture cure hyperthyroidism?

No. Thyroid disease needs veterinary diagnosis and treatment.

Why is my cat losing weight but eating more?

This is a classic sign of hyperthyroidism, but diabetes and other diseases look similar. Have your cat tested.

Is treatment lifelong?

Medicine is usually lifelong, while radioiodine or surgery may resolve the problem. Your veterinarian can explain the options.

Related cat conditions

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