An interesting article by Julia Medew of dailylife.com.au
One in three Australian women who have their first baby with the help of infertility treatments become pregnant again without any assistance within two years.
A study of 236 women who had a baby through IVF and other assisted reproductive treatments found 33 per cent of them conceived a second child naturally within two years of their first birth.
Women whose infertility was initially diagnosed as ”unexplained” were more than twice as likely as others with a specific infertility diagnosis to become pregnant naturally, suggesting they may not have needed treatment in the first place.
Researcher Karen Wynter, of the Jean Hailes research unit at Monash University, said it was also possible that some of the women had undiagnosed endometriosis when they were struggling to get pregnant because the condition affects fertility but tends to improve after pregnancy.
”If these women hadn’t been diagnosed with endometriosis and the clinicians tell me this is quite common … that might be why they were struggling the first time,” she said.
”The pregnancy itself actually helps to alleviate some of the symptoms and the second pregnancy comes around easier.”
The women who became pregnant naturally were also more likely to have been in relationships of shorter duration.
”One possible explanation is that these women are having sex more frequently,” Dr Wynter said.
Age did not appear to be a factor regarding subsequent natural pregnancies.
The study is published in the Australian and New Zealand Journal of Obstetrics and Gynaecology.