Why do some diseases cause a loss of appetite

There are several possible reasons why a person with a disease might experience a loss of appetite.

One reason is that the disease itself can affect a person's appetite. For example, some diseases can cause inflammation or irritation in the digestive system, which can make eating painful or uncomfortable. Additionally, some diseases can affect the body's metabolism or hormone levels, which can alter appetite.

Another reason for a loss of appetite can be the side effects of medications used to treat the disease. Many medications can cause nausea, vomiting, or a change in taste or smell, which can make food unappealing.

Finally, the person's emotional state can also play a role in their appetite. For example, if they are feeling anxious, stressed, or depressed, they may have a decreased appetite.