IVF technique linked to increasing risk of intellectual impairment

The researchers found a 51% increased risk of intellectual impairment, marked by an IQ below 70, in children conceived by intracytoplasmic sperm injection (ICSI) compared with standard IVF.

This amounted to an increase in risk from 62 per 100,000 children (0.062%) to 92 per 100,000 (0.092%).

ICSI procedures were linked to a greater than four-fold increased chance of a child developing a severe form of autism. However, the association was found only in cases of multiple births.

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