Hi there,
Welcome to Just Answer! I would like to help you and your cat but need a bit more information please.
Roughly how much did your cat weigh 6 months ago, and how much now?
Over what period of time has your cat lost the weight?
How old is your cat?
Any problems with vomiting or diarrhea?
Any increases in water consumption in the last 6 months?
Fiona
I am a licenced veterinarian practicing in Ontario, and will always do my best to answer your questions. My on-line help, however, cannot take the place of a hands-on examination by a veterinarian.