External factors are indispensable for the development of leukemia. The main factors include physical factors such as radiation and ultraviolet rays, which increase the risk of disease by 3-10 times with long-term exposure; among chemical factors, 80% of leukemia is related to environmental pollution, such as poor quality furniture, decoration materials, cleaning products, paints, cadmium, asphalt containing some harmful chemicals such as radon, formaldehyde, benzene, ammonia, styrene, trichloroethylene and asbestos; biological factors are mainly caused by viruses and bacteria. The viral etiology of human leukemia has been studied for decades, but so far only adult T-cell leukemia is definitely caused by viruses.
Parents are concerned about how far formaldehyde is from childhood leukemia? There are several misconceptions about indoor pollution: 1, no smell is no threat? Do not smell odor does not mean that the room does not have air pollution; when you smell odor, the formaldehyde content of the home may have exceeded 5 times, and more than 10 times the child is susceptible to leukemia.
2, the old house is not polluted? In fact, many houses in the last century using granite paving and wall, its radioactive substances can also damage health, because the formaldehyde release period of up to 3 to 15 years.
3, superstitious foreign goods? In fact, whether the pollution exceeds the standard and national, foreign goods are not necessarily linked.
Therefore, there are four recommendations: 1, pay attention to indoor air, more doors and windows ventilation, especially newly renovated rooms, it is best to open the windows for 1 to 3 months before moving in; 2, in the decoration of new houses, purchase furniture to strictly control the materials; 3, cigarettes are also one of the main sources of indoor formaldehyde pollution, do not smoke, especially families with children, should be passive smoking is an important cause of childhood leukemia; 4, in the indoor Planting plants such as hanging orchids, hairy trees, etc., both aesthetically pleasing and can be a good way to improve indoor air quality.
Internal factors such as genetic factors and the development of certain leukemias are related: 8.1% of leukemia patients have a family history of leukemia, while the control group is only 0.5%; the incidence of ALL is 30 times higher than expected in people married to close relatives; certain hereditary disorders are often accompanied by a higher incidence of leukemia, such as Down syndrome, Fanconi anemia; but leukemia is not a hereditary disease.
In addition, immune deficiency: weakened resistance or malfunction are prone to the disease; nutrition: lack or imbalance of vitamins, minerals, as well as protein, fat, sugar, fiber, etc. in the recipe can cause disorders of the internal environment; mental: related to a longer period of mental depression, depression; bad habits: including smoking and alcoholism, partial diet, unscientific cooking, etc.