This is one of the more advanced effects of lung cancer, and it severely affects the lung’s ability to function normally. This also means that the cancer has advanced to a significant degree and has spread from its original site, or metastasized.
Fatigue and weakness
Fatigue and weakness are also possible effects of lung cancer. One reason is that cancer cells can create toxins in the body that affect the healthy function of cells. This in turn causes a person to feel very tired or weak, even if they have had enough rest, or they haven’t exerted themselves.
It’s also possible that patients undergoing treatment for lung cancer can experience both of these symptoms. Unlike surgery which is localized, chemotherapy is systemic, affecting the entire body.
Unfortunately, chemotherapy doesn’t distinguish healthy cells from cancerous cells with 100% accuracy. Because of this, patients can feel tired or weak, especially after chemotherapy sessions. These side effects are also the reason why patients undergoing chemotherapy sometimes need to take breaks, in order for their body to recover.
Loss of appetite and sudden weight loss
During it’s more advanced stages, the effects of lung cancer can also extend to loss of appetite as well as sudden weight loss. This also occurs when cancer patients undergo chemotherapy.
Aside from negatively affecting the function of normal lung cells and reducing oxygen exchange, cancer cells use more energy. All cancer cells rapidly divide, which requires nutrients, energy, and space, which further deprives normal cells. This is why unexplained fatigue and weight loss often occur in cancer patients.