Lung cancer occurs when a malignant (cancerous) tumor grows inside the lungs, in structures such as the bronchi (small tubes that connect the windpipe to the inner surfaces of the lungs where gas transfer takes place). Like many other types of cancer, lung cancer is capable of spreading (metastasizing) to other parts of the body. In this case, cancer beginning in the lungs most commonly spreads to the brain, bones, adrenal glands and liver, via any of three mechanisms: direct extension, via the blood vessels, or via the lymph system. Direct extension occurs when a tumor grows rapidly in size such that it begins to touch an adjacent organ or structure, and then begins to penetrate itself into that adjacent organ or structure. Tumor cells are also able to get into the blood and lymph circulatory systems and travel, one by one, to distant structures.Lung cancer is now the most prevalent form of cancer affecting Americans with an estimated 222,500 new cases every year, according to the American Cancer Society (ACS, 2010). Beyond being the most common form of cancer, lung cancer is also often difficult to treat. As a result, lung cancer is the most deadly cancer with roughly 160,000 Americans dying from it every year. This is about 30% of all cancer deaths! (ACS, 2010).Although lung cancer is difficult to treat and cure, it is for the most part preventable. Lifestyle choices can be made which can almost eliminate your risk for getting the disease. Your decision to stop smoking and to eat a healthy diet featuring plenty of fresh fruits and vegetables can greatly decrease your risk.Cannabis oil is a thick, sticky substance composed of cannabinoids, such as THC and CBD, which is obtained from cannabis flowers using a solvent extraction procedure. It is the most concentrated form of cannabis products, which makes cannabis oil the most powerful. The oil can be vaporized into the lungs, ingested orally, applied topically or used as a suppository. It can also be mixed with creams or salves for beauty treatments, and other external uses.The cannabis plant originated from Central Asia, and is one of the oldest, mental stimulating drugs known to mankind. The beginnings of its use are difficult to trace, since the plant was cultivated and consumed long before the appearance of writing. According to archeological discoveries, the cannabis plant has been known in China at least since around 4000 BC.Cannabis, particularly cannabis oil, is a popular topic. Understandably, many people want to try anything that may help treat their own, or a loved one's, cancer - particularly if things are not going well with conventional treatments. Cannabis oil is only one of a number of treatments people might come across. Cannabis oil can contain varying amounts of CBD and THC.Some of the diseases and conditions that cannabis oil has been used for include: Crohn's disease, diabetes, gout, pain relief, glaucoma, migraines, Dravet syndrome, asthma, Doose syndrome, epilepsy, anorexia, rheumatoid arthritis, multiple sclerosis, psoriasis, opioid dependence, strokes, head trauma, Alzheimer's disease, Parkinson's disease, HIV, dementia and - what I will be focusing on -Lung cancer.CBD oil does not contain THC and therefore does not have any psychoactive effects. It can be sold in many countries of the world as long as it is sold as a food supplement and the sellers are not making any claim about its medicinal properties.There are a number of examples where people say that using CBD oil has had a dramatic effect on their health. These are testimony to the efficacy of CBD Oil as an alternative therapy.