In women taking newer forms of birth control, the chance of developing life-threatening blood clots in two times higher than women taking older versions of contraceptives. Another study says increased thrombocytopenia on a background of reception of contraceptive tablets.
This time the experts from the University of Copenhagen believe that all receiving contraceptive developed in the 1980's, should go to other kinds of contraception. Researchers reviewed medical records to identify blood clots in the period from 2001 to 2009 millions of women aged 15 to 49 years.
It was found that using pills old women are three times more likely to suffer from blood clots ( in pills containing levonorgestrel), but among those new tablets the risk of thrombus was above six times.
While it is difficult to draw conclusions that provokes the formation of blood clots, or it might be combined contraceptives content of gestodene, drospirenone. But while doctors recommend to switch to the old oral contraceptives with levonorgestrel.
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The danger of contraceptives should not be exaggerated, another study by British scientists found that the pill for 10 years reduces the risk of developing ovarian cancer in women by 10 percent.