American Cancer Society and the three federal agencies issued 15 reports, lists 20 factors that may trigger cancer , including shift work and 19 kinds of chemicals.

The study showed that shift work and the existence of female breast cancer associated long-term exposure to the light at night may disrupt the human biological clock and caused cancer. In addition to common carcinogens such as formaldehyde , used to manufacture flat panel TV 's new compounds, indium phosphide and other compounds appear in the " blacklist " .

Assist led the study, Elizabeth Ward, the American Cancer Society told reporters by telephone , the selection of these factors based on two considerations, many of the previous one suggests that they may more strongly associated with cancer , although the present lack of energy Determine the relationship between the two studies; second part of the selection of the carcinogens are common , or "like formaldehyde are widely used in many industries as "or " though not widely used , but the amount is increasing . "

Reported that the number of experts believe that there is fairly reliable evidence that these factors may pose health risks , need more follow-up research .

Report that

The following 19 kinds of chemicals are included in the possible carcinogenic

Lead and lead compounds on the brain cells known toxic .

InP for semiconductor industry, the mice experiments show that it would lead to " very high " incidence of lung cancer .

For the manufacture of tungsten carbide cobalt alloy class .

Titanium dioxide is widely used in cosmetics . Inhalation of this material may be a tumor of rodents . This stage, the titanium dioxide nano- particles can penetrate human skin, there is conflicting evidence.

Smoke and gases generated by welding may include manganese and iron. Previous studies have shown that the higher risk of cancer for welders .

Refractory ceramic fibers produced from molten alumina and silica .

Diesel engine emissions .

The end of that black smoke , as ink , paint , charcoal , and polish and so on raw materials. Workers in the manufacturing process may inhale small particles .

Styrene and styrene oxide from the cigarettes, marijuana , and released when burning wood and other produce , for the production of polystyrene and resin .

Propylene oxide for the production of plastic products, can damage human DNA .

Formaldehyde is widely used , such as the plastics industry , and medicine . 35-40% formaldehyde solution called formalin , a preservative , disinfectant and bleaching . Research shows that funeral industry practitioners are more likely to suffer from cancer and leukemia .

Acetaldehyde widely used solvent , can enter the body through the respiratory tract and skin .

Dichloromethane to remove the oil , paint and aerosol products in common solvents .

Trichloroethylene common solvent for metal degreasing , is the most common groundwater contaminants .

PCE a kind of dry-cleaning agent . Studies show that it can induce cancer in rodents .

Chloroform common in sterilized with chlorine water and air , some foods also contain chloroform , may be associated with bladder cancer .

Polychlorinated (b ) benzene have received widespread use , is now banned products, it can on the air, water and food produce permanent pollution . It is not clear carcinogenic effect on the human body .

Phthalate is widely used in cosmetics, can induce cancer in rodents . But it created the human body may differ from rodents in the metabolic process .

A herbicide atrazine .

Other claims

Overweight or obese Asians are more likely to die from cancer

Pressure is an important incentive cancer experts believe that increased pressure is an important incentive cancer . Studies in cancer have a C -type character to say , his personality characteristics: introverted , mentally unbalanced , always striving for perfection but to do well, preoccupied with , depression anxiety , so a person who is vulnerable to attack cancer .

Yi died of cancer in obese than people with normal weight , overweight or obese Asians are more likely to die from cancer . A large study showed that compared with normal weight , obese people die of cancer risk to 21% higher , while overweight people the chance to die of cancer than 6%. The researchers said the survey of obesity , particularly susceptible to colon cancer , rectal cancer , breast cancer, ovarian cancer , cervical cancer , prostate cancer and leukemia .

Unhealthy eating habits unhealthy eating habits induced cancer is the direct cause of many cancers . According to reports, moldy food contains large amounts of aflatoxin , aflatoxin induced liver cancer is the culprit . Pickled foods contain more salt , produced in the process of making a lot of nitrite - has been proven to be a major carcinogen.

Often eat hot pot of food could lead to overheating of the esophagus.