EurekAlert! -- A study from the University of Gothenburg, Sweden, which monitored a group of women for 25 years showed that the combined oral contraceptive pill (the pill) is the most common form of contraceptive among women under 29. At the same time many young women have unwanted pregnancies resulting in repeated abortions. According to the researchers increased use of an intrauterine device at a younger age would reduce the number of unwanted pregnancies.