With the advent of winter, both in the office or home interior, large windows and doors are closed, over time, the indoor air becomes polluted, it is easy to bring to the human disease.
With the increasingly serious environmental pollution, environmental exposure and childhood leukemia in the relations of the people's attention. Indoor air is the most frequent contact with people, one of the closest external environment, it is about 70% to 90% of the time is spent indoors, time of exposure to indoor air pollution than outdoor, especially children, in time for indoor activities longer merits of their indoor air quality is more important. Children's Cancer largest proportion of leukemia, the highest fatality rate in recent years, epidemiological studies indicated that the rise of its incidence, prevention and treatment of childhood leukemia is leukemia research priorities and hot spots.
At present, the specific cause of childhood leukemia is not clear. Most of that is the combined effect of multiple factors (individual susceptibility and the external environment) the results. Indoor air pollution on the incidence of leukemia in children may play more important role.
1 smoking
Control of smoking is a public health problem need to be resolved, the harm caused by passive smoking is particularly serious. Many studies confirm that smoking is a main cause of lung cancer, in addition to lung cancer, but also can cause a variety of cancers. According to WHO reports, the tobacco smoke "affirmative carcinogen" not less than 44. Smoking parents can make their own risk of leukemia increased by 50%, and acute myeloid leukemia (AML) adversely affect the prognosis, the survival shortened. Mother heavy smokers (≥ l0 cigarettes / day) can increase the risk of AML children, the highest hazard ratio up to 2.67.
2, benzene and other organic solvents
Benzene is an aromatic organic solvent slightly in industry has a wide range of uses. The major source of indoor benzene pollution is indoor and outdoor air pollution, indoor decoration materials into the release of volatile organic compounds. Once the interior decoration, they may be able to release material from the fitting to the indoor air in the past. If too many people exposed to indoor air pollution such, the human health will be affected by different degrees of damage. Long-term exposure to low concentrations of benzene can lead to chronic benzene poisoning, aplastic anemia, myelodysplastic syndrome or leukemia.
Professional relationship between benzene exposure and adult leukemia study findings have been positive in each of the concentration of 67 mg/m3 of benzene exposure of workers suffering from AML risk 20 times higher than the general population; workers exposed to benzene in acute lymphoblastic leukemia (ALL) incidence higher than other groups. There is currently a lack of childhood leukemia and direct relationship between benzene exposure, but the concentration of benzene in indoor air may be growing one of the causes of childhood leukemia. British researchers found that living in the surrounding traffic arteries or the gas station within 100 m of children exposed to benzene and other hydrocarbons concentrations higher than children in other places, the risk of leukemia in children than in other regions increased slightly, AML, ALL, CLL and family are significantly correlated with the number of cars, inferred exposure to benzene in gasoline may be the reason. Childhood leukemia and residential on the nearby factories, or 2 main types of industrial air emissions - oil volatiles and smoke emissions from boilers or internal combustion engine with an increased risk. Air pollution is serious in some areas, large number of leukemia in children.
The survey found that 90% of the families of leukemia patients 6 months to 1 year has been renovated and most have used the luxury and fashion-type stone decoration materials. If the mother before pregnancy and pregnancy exposure to solvents, paints, thinners, cosmetic agent, cosmetic agent contact with the father before marriage will increase the risk of childhood ALL, and the time effect relationship. Regular contact with children (more than 4 times / month) prevalence of organic solvents will lead to increased risk of ALL, and found that mothers of children born in the year before living in the paint brush over the room, the child was born troubles increased risk of ALL, so ALL children increase the risk of indoor activities and children with certain birth living room paint exposures.
Three chemicals
Household chemicals that are used to family life and living environment of the chemical products. Family of chemicals widely used to infiltrate people's clothing, food, housing, among, across all aspects of life, so has the use of dispersing agents and household chemicals, high demand, people exposed to a wide range (including all ages) and exposure for a long time and so on. Use a variety of household chemicals because of their purpose, manner, to the scope of the human body through different channels and pose a health hazard. Children exposed to household chemicals from region to region and family environment in which a great relationship, in which pesticides and dyes closer relationship with childhood leukemia.
A number of studies show that pesticides and leukemia related. Occupational exposure to pesticides and family, especially children with leukemia AML occurs highly correlated. Father has a history of exposure to increased susceptibility of children, children exposed to risk of pesticides than adults. Type of use of pesticides within the family the more the frequency the greater the risk the greater the likelihood ALL.
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