6 Home Care Tips for Senior Cats with Feline Hyperthyroidism

A woman kneels in her kitchen, holding a food bowl while her senior cat with feline hyperthyroidism looks at the camera.

Establishing a stress-free mealtime routine helps senior cats with feline hyperthyroidism stay nourished and comfortable.

Caring for a senior cat is a delicate balance. It requires adjusting to their slowing movements, changing appetites, and evolving needs. But when feline hyperthyroidism enters the picture, everything becomes more complicated for your golden-aged feline friend.

At the Centers for Advanced Thyroid Therapy (CATT), we believe caring for senior cats with hyperthyroidism is about treating the whole cat, not just managing symptoms. 

In this article, we’ll explore how to create a solid foundation at home for your senior cat with feline hyperthyroidism and discuss why I-131 therapy is the best long-term solution for a healthier, happier life with your lovable furball.

What You’ll Learn: 

  • Short-term, vet-approved home care strategies to keep your cat comfortable while preparing for I-131 treatment.

  • Why hyperthyroidism presents unique challenges for senior cats and how it affects their overall health.

  • How I-131 radioiodine therapy works and why it’s the only cure for feline hyperthyroidism.

Let’s get started on helping your cat feel their best every day!

These tips are short-term solutions for feline hyperthyroidism.

The following tips will help keep your cat comfortable and manage their symptoms in the short term. But since hyperthyroidism is a progressive disease, these strategies are just a temporary fix. 

The good news? A permanent cure is within reach. Use these tips to support your cat’s health while you prepare for their I-131 treatment, knowing that relief is just around the corner.

1. Prioritize Frequent, Small Meals to Support Their Metabolism

Why it matters: Hyperthyroidism kicks your cat’s metabolism into overdrive, making it harder for them to maintain weight. Without enough nutrition, they’ll start losing muscle mass, leading to weakness and fatigue. However, with the right care, many hyperthyroid cats can continue to live long, happy lives.

What to do at home:

  • Offer four to six smaller meals throughout the day instead of one or two large ones.

  • Choose high-protein, high-calorie foods designed for senior cats.

  • Consider prescription low-iodine diets if your vet recommends them.

Bonus tip: If your cat is picky about food, try warming it slightly or adding a little water or tuna juice to make it more appealing.

2. Keep Fresh Water Readily Available to Prevent Dehydration

A cat drinks from a water fountain, a great way to keep senior cats with feline hyperthyroidism hydrated and healthy.

Cats are drawn to moving water and a fountain encourages drinking, supporting kidney health in senior cats.

Why it matters: Hyperthyroid cats tend to drink (and urinate) a lot more than usual. Staying hydrated is crucial to prevent kidney issues and dehydration.

What to do at home:

  • Keep multiple water bowls in different locations around your home.

  • Try a cat water fountain–many cats prefer moving water.

  • Mix wet food into their diet for extra hydration.

Bonus tip: Adding ice cubes to the water can make it more interesting and encourage more drinking. Plus, some cats love to bat them around!

3. Create a Comfortable, Low-Stress Living Environment

Why it matters: Stress can make hyperthyroidism worse, causing even more weight loss and behavioral changes. Senior cats thrive in calm, predictable environments.

What to do at home:

  • Keep their bed in a warm, quiet spot where they can relax undisturbed.

  • Use soft bedding and heat pads to ease joint stiffness.

  • Maintain a consistent routine to reduce anxiety.

Bonus tip: Consider using calming pheromone diffusers or soft music to create a soothing atmosphere. Your cat may not know what a spa day is, but they’ll appreciate the vibes.

4. Adjust the Litter Box Setup for Senior-Friendly Access

Why it matters: Many senior cats develop arthritis, making it harder to step into high-sided litter boxes. If your hyperthyroid cat is drinking more water, they’ll also need to go to the bathroom more frequently.

What to do at home:

  • Choose a low-entry litter box that’s easy to step into.

  • Place litter boxes on every floor of your home for convenience.

  • Use soft, fine-grain litter that’s gentle on aging paws.

Bonus tip: If accidents happen, don’t scold them. Your cat may simply be struggling to get to the box in time. Instead, make adjustments to make bathroom breaks easier.

5. Monitor Their Symptoms and Behavior Closely

Why it matters: Feline hyperthyroidism can lead to secondary health issues like heart disease. Staying on top of changes in your cat’s behavior can help you catch problems early.

What to do at home:

  • Track their weight, appetite, and thirst levels in a simple notebook or app.

  • Watch for red flags like vomiting, diarrhea, extreme restlessness, or rapid weight loss.

  • Schedule regular vet check-ups to monitor thyroid levels.

Bonus tip: Take pictures or videos of your cat’s daily habits. Sometimes, subtle changes are easier to spot when you look back.

6. Support Their Mobility and Muscle Strength

A senior cat plays on a cat tree, promoting mobility and muscle strength, important for managing feline hyperthyroidism.

Climbing and play help maintain mobility and muscle strength in senior cats with feline hyperthyroidism, keeping them active and engaged.

Why it matters: Many hyperthyroid cats lose muscle mass, which can make jumping and moving around harder. Gentle activity helps keep them mobile without overexerting them.

What to do at home:

  • Encourage short, gentle play sessions with wand toys or treat puzzles.

  • Offer ramp access to favorite high spots like couches or beds.

  • Consider joint supplements like glucosamine or omega-3 fatty acids (with vet approval).

Bonus tip: If your cat hesitates before jumping onto furniture, they might need a little help. Adding a small step or stool can make all the difference.

The Only Cure for Hyperthyroidism: I-131 Radioiodine Treatment

Unlike medication, which only controls symptoms, I-131 therapy eliminates hyperthyroidism at its source by targeting overactive thyroid cells. This restores normal thyroid function without the need for daily medication, prescription diets, or routine bloodwork.

  • A single treatment permanently resolves hyperthyroidism.

  • No more daily pills, prescription food, or ongoing vet visits.

  • Most cats return to normal thyroid levels within two weeks.

  • Less stress for both you and your cat.

While the home care tips we shared here can help temporarily manage symptoms, the best long-term solution is eliminating the disease entirely with I-131 therapy.

Contact us today to begin your cat’s journey toward full recovery and a healthier, happier life.

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