You and your ilk have yet to produce anything disputing the aurguments against man made climate change.
He is correct to a point. It is still not understood why some smokers develop cancer and others do not. In my non medical opinion genetics play the biggest role.
How?
Our bodies create billions of cancer cells daily. In return our body destroys and disposes them.
Unfortunately some cancer cells survive ( due to genetics) and the body doesn't see them. It treats them as they are normal cells. These cells grow and become cancer. ( any and all forms- depending on genetics)
There is no cause to cancer. Unless you want to blame your body. When in fact, it created them.
Regardless of biological explanation of what cancer cells are, smoking increases chances of obtaining lung cancer by a substantial margin.
Cigarette smoking is the number one risk factor for lung cancer. In the United States, cigarette smoking causes about 90% of lung cancers. Using other tobacco products such as cigars or pipes also increases the risk for lung cancer. Tobacco smoke is a toxic mix of more than 7,000 chemicals. Many are poisons. At least 70 are known to cause cancer in people or animals.
People who smoke are 15 to 30 times more likely to get lung cancer or die from lung cancer than people who do not smoke. Even smoking a few cigarettes a day or smoking occasionally increases the risk of lung cancer. The more years a person smokes and the more cigarettes smoked each day, the more risk goes up.
There's no evidence that smokers have a greater chance of getting lung cancer than non-smokers?
