Leukemia in children caused by light at night?


Leukemia in children caused by light at night?

Too much exposure to electric light at night will cause some types of cancer, including leukemia in children.

Leukemia is a malignant disease in which the bone marrow and other blood forming organs produce a large number of white blood cells. This is the most common cancer in children, is derived from the innate and environmental factors (gene). Ion radiation, electromagnetic fields, chemicals, infectious virus and is considered to be related to the incidence of disease. Disease has increased by 50% in children under 5 years of age in the 1950s.

In the first international scientific conference on childhood leukemia on 7/9, the researchers announced the results of a study on the effects of light at night and the night shift to risk cancer. They declared these factors cause the body's circadian rhythm disorders and may cause cancer.

"We do not know too much exposure to light the night has to be the cause of high incidence of leukemia in children or not., But with what we know about cancer, this does not is no basis ", Russell Foster, neurological scientists at the University of experimental molecular London.

Explaining this, Mr Foster said night light interfere with the hormone melatonin production - an anti-oxidant effect to protect DNA from damage caused by oxidation. In eyes with a light-sensitive cells that provide information function controls the body's circadian rhythm. During the day these cells function normally. At night, if exposed to too much light, the light-sensitive cells will continue to transmit signals to the brain is disrupted circadian rhythms (the body will function as the daytime). Meanwhile hormone melatonin, which is produced only at night, will not be created, because the body is being "deceived" and work as day.

Many studies have shown that the hormone melatonin decline associated with increased risk of cancer. Not fully protected by the hormone melatonin, modified DNA can produce substances that cause cancer.

In addition, a number of genes and protein products involved in the daily circadian rhythm control. We interact closely with each other in the production cycle of the cell. When circadian rhythm disorders and melatonin production process control, the cells multiply uncontrollably and produce tumors.

Scientists advice for parents is to give the child asleep in a no light environment. In addition, we need to limit night shifts. Another study published in the conference that women have to do night shifts have high incidence of breast cancer than others.