The reason why some women can get pregnant on the pill
Birth control pill contraceptive pill calendar routine nobody close-up the contraceptive pill is supposed to be 99% effective in preventing pregnancies when taken perfectly (ie, at the same time every day).
But despite that, it's not unheard of for women to get pregnant while on the pill.
When taken imperfectly so, at different times of the day, or with the odd missed pill that effectiveness rate drops to 91%. Because of this, it was previously assumed that any unwanted pregnancies on the contraceptive pill would be due to the woman not taking it properly.
Cropped shot of an unrecognizable teenage girl drinking medication
But new scientific research suggests there might be another cause of unplanned pregnancies occurring despite the pill or other forms of hormonal...