How Many Years of Smoking Causes Cancer? 

If you smoke, you may be wondering how many cigarettes a day are safe. The answer is complicated. According to some studies, there are no safe cigarettes. There are no limits, but they do vary. One study shows that people who smoke more than 10 cigarettes a day have a greater risk of getting lung cancer. Other research suggests that the lower cigarette intake makes it more likely to cause cancer. The average smoker has more than sixteen years of experience. 

The number of cigarettes a person smokes affects their risk of cancer, but the longer they smoke, the more dangerous it becomes. The World Health Organization calls air pollution one of the most common environmental carcinogens, and it is a bigger problem in industrialized nations like the U.S. and China. The reason why lung cancer is so difficult to detect is that it strikes a body part you can't see and can't feel. It is very hard to tell if you're suffering from lung cancer until you begin experiencing symptoms. 

Researchers have found that the number of cigarettes a person smokes has a direct relation to their risk of developing cancer. As a smoker, your odds of developing lung cancer are higher the longer you smoke. The World Health Organization states that a person's risk of getting lung cancer is ten times higher the longer a person has smoked. This study analyzed data for more than 15,000 people, and determined the number of cigarettes per day required for an increase in risk. The average age of a person diagnosed with lung disease is eighty-seven. 

Despite the rising risk of lung cancer from smoking, studies show that people have different risk thresholds for different types of cancer. After five years, the average smoker's risk of developing throat, tongue, and esophageal cancers is half that of non-smokers. In addition to cigarettes, cars emit carbon monoxide, which is deadly if ingested in large amounts. In large doses, carbon monoxide starves the body of oxygen and stops organs from functioning. 

Smoking cigarettes causes more than two million deaths in the U.S., and three out of every four people with lung cancer were smokers. There are more than 7,000 chemicals in tobacco smoke. The majority of them are carcinogens. A recent study found that the average adult smoker has about five times the risk of lung cancer compared to non-smokers. In addition to these, cigarette smoke contains radioactive polonium-20, mercury, and arsenic. 

In addition to lung cancer, smoking is also associated with many other diseases. While lung cancer is the most well-known, it also contributes to tumors in the mouth, esophagus, throat, pancreas, and bladder. Despite the risk of lung cancer, a smoker's chances of developing cervical, breast, and oral cancer after five years of smoking are 50% lower than those of nonsmokers."