Women who use a vaginal ring or skin patch as contraceptive methods are more at risk of a blood clot compared to those who take the second generation of contraceptive pills, according to a large-scale study.
Research published on bmj.com has shown women using the skin patch or a vaginal ring are up to eight times more likely to develop venous thrombosis (blood clots in vein) than women who do not use any type of hormonal contraception.
Women taking the more modern combined oral contraceptive pill containing the hormone levonorgestrel, are just three times more likely to develop a clot.
A team led by Professor Øjvind Lidegaard at the University of Copenhagen reviewed data in Danish non-pregnant women aged 15-49 from 2001 to 2010.
Commenting on the findings, Professor Lidegaard said women aged from 30 upwards who use the vaginal ring or the patch might consider shifting to using the second generation of contraceptive pills.
He said: "The most important thing is that women are informed about the risk. The ring and the patch is approximately double the risk compared with second generation pills.
"If women still prefer to have a ring or a patch, for example because they are not able to remember to take the pill daily, then they can continue. That is their own choice.
"For me, the important thing is that they are informed about the risk."
IVF babies born from frozen embryos are heavier and healthier than those born from fresh embryos, new fertility research has discovered. Read the full story here.
Babies with three biological parents could soon be a reality after a new £6m laboratory has been given the go ahead and funding to develop a unique IVF technique which uses DNA from a third party. Read the full story here.
Reception class pupil Reuben Blake went back to school today, but his twin sister will have to wait another five years until she is old enough. That is because, despite the fact the brother and sister were conceived from the same batch of embryos, they were born five years apart to parents Simon and Jody Blake. Read the full story here.
Scientists have made a breakthrough that could enable infertile men to father children with their own sperm. Researchers at Muenster University in Germany grew mouse sperm in a laboratory and believe the same technique could be used with human sperm. Read the full story here.
Scientists from the Imperial College London have discovered a 'fertility switch' that could help treat infertility and miscarriage in the future. Read the full story here.
The Human Fertilisation and Embryology Authority have announced today that women who donate their eggs to infertile couples, will be rewarded an extra £500 in costs. Read the full story here.
A baby girl was born after being conceived using sperm that has been kept frozen for 25 years - the longest that sperm has been kept frozen and then successfully used for IVF in the UK. Read the full story here.