Weight loss is indicative of many illnesses, but it is worth noting that weight loss is almost always present in a cancer diagnosis. If you begin to notice that you are dropping pant sizes that you haven't intentionally been trying to do, it might be worth a trip to the doctor's office.
Weight loss is often a direct response to a loss of appetite, and the reason for that occurring in a person with lung cancer is varied. First of, given that lung cancer is localized to the respiratory area of the body, swallowing can also be impacted, and can become painful.
Also given the proximity to the digestive system and thyroid in the neck, if the lung cancer metastasizes, it can easily infect them with secondary tumors cause inflammation and swelling.
Atop of all of this, very often the diagnosis alone can have a psychosomatic effect on a lung cancer, causing a sever dip in appetite. Certain treatments, including chemotherapy and radiotherapy can both be nausea inducing.