Loss of appetite linked to immune system, mental health, and illness.
Loss of appetite means not wanting to eat as much as usual. It can lead to unintentional weight loss and feeling sick after eating. Long-term loss of appetite, also known as anorexia, can have medical or mental causes. Various conditions, both physical and mental, can cause a decrease in appetite. This can be related to a weakened immune system, feeling unwell, or having stomach issues.