Some studies have also talked about the reflection reduce smoking in the United States on the low numbers of deceased lung cancer. Radiation

exposure to radiation may cause cancers. Radiation emitted by radon, or exposure to ultraviolet radiation from the sun has been subjected to the occurrence of cancers. Infectious diseases, 
some cancers may stem from a viral infection, usually occurs more clearly in animals and birds, but there are 15% of human cancers, which occur due to a viral infection. Among the most important viruses associated with cancers areHPV and hepatitis C and hepatitis B and C and HIV epidemic Epstein - Bar and Lymphoma leukemia virus and human blood. Viral infection is the second reason, after the cause of smoking, the incidence of liver cancers and cervical cancer. Divided cancers are caused by a viral infection, according to change the sound of the virus cell to a cancer cell into two parts, the first change is an acute viral cancers and cancers of the second viral slow change. In cancers of viral acute or rapidly changing, the virus carries a gene stimulates production of a protein of the oncogene and then the sound cell turns into a cancer cell. In contrast, viral cancers consist slow change dock when the genome of the virus in nearby Jane initial and throw in a healthy cell. Since the virus that encrypts your genes, because of the juxtaposition of the gene and the viral oncogene is a gene also encrypt the tumor. But the slow viral cancers are rare occurrence because often be random fusion of the virus with the genome of the infected cell. Recently, has been a correlation between stomach cancer and Helicobacter pylori bacteria helicobacter pylori discovered that inflammation occurs in the wall of the stomach and may lead to her cancer. 

hormonal imbalance

hormonal imbalance may occur effects similar to the effects of Alemsrtanat non-mutagenic. They increase the speed of cell growth. Increase the estrogen that promote the occurrence of endometrial cancer is one of the best examples of this. 

Genetics

Genetics, a gene transmission carries a mutation of a patriarchal to son, is one of the most important causes of most cancers. But cancer is not subject to the occurrence of the genetic bases. And examples of cancers associated with gene mutations: 




The most common cancers for males: 
bladder cancer (15%), 

liver cancer (12%) 

of lymphatic tumor (10%), 

leukemia -liukimaa- (9%), 

lung cancer (6%), 

colon cancer (5 %) 

and other cancers (43%) 

cancers most affected females: 
breast cancer (36%) 

tumor lymphatic (7%), 

leukemia (6%), 

bladder cancer (5%), 

colon cancer (5%), 

liver cancer (4%) 

cancers. other (37%) 

in the United States , advanced lung cancer at the forefront of cancer is received and lead to the death of the victim is male or female, and then followed by prostate cancer in male patients and breast cancer in female patients.