While it’s well understood for people that weight loss is a function of both diet and exercies, in truth we’re often limited in our options for exercise with our cats. Continuing to play with cat’s into their adult lives is helpful, as can be strategically placing litter boxes and food in areas that would require your cat to move about the house, climb stairs, etc.
Also, recent studies suggest that 65% of cats over the age of 6 have evidence of arthritis and 80%+ of cats over the age of 9 have evidence of arthritis. This creates a bit of a problem. Cats may become less active because of the discomfort from arthritis. This decreased activity then contributes to weight gain.
THE BOTTOM LINE:
Ultimately, dietary management is the mainstay of weight control in cats. Talk to your veterinarian about the right diet and feeding guide for your cat.