I'm not sure what you feed your cats although you said "handful" so I'm thinking dry. I fed my cats dry food exclusively and less than the amount specified and all my cats were getting a little overweight, one in particular., whom the vet told me was overweight. And they are young yet so I was a little afraid of weight being a big problem as the got older. Based on some of the information I've been reading, some of it on this site, I am thinking it may have possibly been the dry food as far as my cats go. I have recently switched them to canned food just this last month. I am thinking this may help my cats. A thought for you anyway.