- Most common cancer in the world
- smoking causes 87% of cases as tobacco contains mutagenic chemicals
- second-hand smoking causes 3% of cases
- Radon gas causes lung cancer, a radioactive gas that accumulates in buildings
- Asbestos, silica other solids may also cause lung cancer, usually on construction sites
- Symptoms include: difficulties breathing, persistent coughing, coughing up blood, chest pain, loss of appetite, weight loss, general fatigue...
- parasites or microbes get into contact with the organ weakening the immune system. As the immune system can not fight back, the parasites will keep growing, eventually out of control. The immune system is too weak to kill the cancer cells
- Cancer cell is extremely low in ATP energy
- Cancer cells require 15 times more glucose than healthy cells but hardly produce any ATP
- microbes from the tobacco will cut into the cell membrane, blocking ATP production
- This will cause a cell to become cancerous