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IVF 'increases blood clot risk'

A new study has found that women who undergo IVF have a higher risk of experiencing blood clots and pulmonary embolism while they are pregnant.

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IVF blood cot risk in numbers

The study, published on, 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

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