Dietary therapy using iodine-restricted food is an emerging treatment option for feline hyperthyroidism that avoids the welfare burden of daily medication or the risks of more invasive treatments.
Dietary management of feline hyperthyroidism offers a welfare advantage for cats that experience stress from daily pilling or frequent veterinary visits for other treatments. The welfare calculation depends on individual cat circumstances: for cats in single-cat households who accept the restricted diet, dietary therapy provides effective thyroid control with minimal daily welfare burden. However, enforcing exclusive feeding in cats that access outdoor food sources or in multi-cat households creates its own welfare challenges including food competition stress. The palatability of the restricted diet is acceptable to most cats but requires individual assessment. Combining dietary therapy with periodic thyroid monitoring maintains treatment efficacy while minimizing the welfare burden of disease management.