In a new study, researchers from the Danish Cancer society mapped the Danish childhood cancer through 72 years of age.

Several Danish children get cancer, but the exact reason for the development is yet unknown.

this is The conclusion of researchers from the Danish Cancer society, which have analyzed the incidence of cancer among Danish children from 1943 to 2014.

It writes the organization in the press release.

the Researchers from the Danish Cancer Control Centre for research on cancer has reviewed the Danish cancer registry in the period 1943 to 2014.

Here they looked at how many children in the period have been cancer.

Through the 72 years in total 15.184 children got the disease, and the incidence has been highest among children aged 0 to 4 years and 15 to 19 years, says the press release.

the Scientists can also see that the frequency is increased through the entire period. From 1943 to 1955 was that each year, 168 new children who got cancer.

From 2006 to 2014, the number had risen to 280 new cases each year.

Marie Hargreave is senior researcher at the Danish Cancer society and has been co-author on the study.

She says that the researchers only know of a few reasons for the child cancer, but mention to the fertility treatment and the use of oral contraceptives may affect the risk of child cancer.

– Several studies have shown that the treatment appears to affect the risk of child cancer. Including a newly released study in the Journal of the American Medical Association (the medical journal, ed.), as we stand behind.

– A second studio, which we also did recently, was that if the mother had taken hormonal contraceptives or during pregnancy, so there was increased risk that her child got leukemia, she says.

However, mentions the researcher, also, that one should keep in mind that the child cancer fortunately be seen very rarely. Therefore, it is a small increased risk, you look at the use of fertility treatments and birth control pills.

In Denmark, there is annually almost 300 new cases of children who get cancer, according to a press release.

– the Increase in the frequency of child cancer, which can also be seen internationally, suggests that we are researching more into the possible reasons for this increase and to identify risk factors and protective factors for child cancer, says Marie Hargreave.

the Research is according to her important because child cancer “is one of the most frequent causes of death among children, and that even those who survive can have many helbredsfølger several years after”.

However, Denmark is also the country in the Nordic region, which is best to treat the cancer, so four out of five children today survive the disease, says the press release.