The Top 8 Causes of Cancer

Read Review On The Top 8 Causes of Cancer

Cancer has many causes.

Environmental Factors: Environmental factors are commonly belief to be responsible for 80% to 90% of all human cancers. The major environmental factors identified so far include:

Tobacco: Tobacco in assorted forms of its usage (e.g., smoking, chewing) is the major environmental cause of cancers of the lung, larynx, mouth, pharynx, esophagus, bladder, pancreas and probably kidney. It has been estimated that, cigarette smoking is responsible for more than one million premature deaths each year.

Alcohol: excessive intake of alcoholic beverage leads to esophageal and liver cancer. Beer consumption may be linked with rectal cancer.

Dietary Factors: Smoked fish is linked to stomach cancer, dietary fiber to intestinal cancer, beef consumption to bowel cancer, and a high fat diet to breast cancer. Food additives are also some causative agents.

Occupational Exposures: These include exposure to benzene, arsenic, vinyl chloride, asbestos, polycyclic hydrocarbons etc. (e)

Viruses: Hepatitis B and C virus is reported to be linked to hepatocellular carcinoma. Human papilloma virus (Hpv) is linked with cancer cervix.

Habits And Life Style: Habits and lifestyle of population may be linked with an increased risk of distinct cancers. Some examples are the established relationship in the middle of smoking and lung cancer, betel chewing and oral cancer, etc. There are several other environmental factors such as sun light, radiation, air and water pollution, pesticides which can cause cancer.

Genetic Factors: Genetic influences have long been suspected. For example, retinoblastoma occurs in the children of the same parent. The Mongol race is more likely to organize cancer (leukemia) than normal children. However, genetic factors are less conspicuous and more difficult to identify.