Dental Problems: Cats with dental issues might find it painful to eat, leading to weight loss.
Gastrointestinal Problems: Conditions like inflammatory bowel disease, parasites, or gastrointestinal tumors can affect a cat's ability to absorb nutrients, causing weight loss.
Hyperthyroidism: An overactive thyroid gland can lead to weight loss despite an increased appetite.
Diabetes: Cats with diabetes may lose weight even if they're eating more because their bodies can't use the nutrients properly.
Kidney Disease: Chronic kidney disease can lead to weight loss over time.
Cancer: Cancerous growths can consume a lot of the body's energy and nutrients, causing weight loss.
Liver Disease: Liver problems can affect a cat's metabolism, leading to weight loss.
Diarrhea or Vomiting: Persistent diarrhea or vomiting can prevent a cat from retaining nutrients, causing weight loss.