Hyperthyroidism is one of the most common endocrine diseases in older cats, typically affecting felines over the age of 10. It occurs when the thyroid gland produces too much thyroid hormone (T4), speeding up metabolism and causing a range of health problems. While some risk factors are genetic or age-related, there are proactive steps you can take to reduce your cat’s risk of developing this disease.
In this vet-reviewed guide, we’ll cover:
- What hyperthyroidism is
- Common causes and risk factors
- 5 evidence-based ways to reduce your cat’s risk
- Symptoms to watch for
- Frequently asked questions
What Is Hyperthyroidism in Cats?
The thyroid gland—located in your cat’s neck—regulates metabolism. In hyperthyroidism, it becomes overactive, leading to elevated thyroid hormone levels, which affect multiple body systems.
Common Causes & Risk Factors
Although the exact cause isn’t always clear, contributing factors may include:
- Age – Most common in cats aged 10+
- Diet – Certain canned foods, iodine levels, or additives may play a role
- Environmental exposure – Flame retardants and household chemicals
- Genetics – Some cats may be predisposed
Don’t miss these 5 life-saving tips for protecting your cat from hyperthyroidism — continue reading on the Next Page button below.
