According to a study conducted by researchers at the University of Gothenburg, Sweden, and published in the journal Human Reproduction, children from in vitro fertilization are more at risk of premature birth or low birth weight. Between 2002 and 2006, they made follow-up on 13,544 births from IVF and 587,009 births to spontaneous pregnancies in Sweden.
The result: children from IVF are at 67% increased risk of preterm birth (before 28 weeks) and 15% more likely to be born before 37 weeks. Regarding the small weight, the risk rises to 13% for less than 2.5 kg and 25% for less than 1.5 Kg.
To recall, other studies have already shown this increased risk of preterm birth and low weight in the case of IVF. The team from the University of Gothenburg has even pointed out that apart from prematurity and low birth weight, pregnancies resulting from IVF single cause in most cases of placental complications.