The study, published on bmj.com, took data from 23,500 women who had IVF and 117,000 women with natural pregnancies and found that:
- 4.2 out of every 1,000 women who had IVF suffered blood clots
- compared with 2.5 of every 1,000 with natural pregnancies
- pulmonary embolism occurred in 8.1 women out of every 10,000 who have IVF
- compared with six out of 10,000 who get pregnant naturally
More top news
New York's attorney general launched the civil rights investigation after dozens of women accused Harvey Weinstein of sexual harassment.
Ibrahim Hussein appeared in one of the terror group's propaganda videos warning of attacks on Italy and Turkey.
Jared O'Mara's made a series of offensive comments, including joking about having an orgy with members of Girls Aloud.