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IVF and Birthweight
A recent study proposed to answer the question, “Does the length of time during which embryos are cultured in vitro affect the birthweight of the infants?” The study, published in the journal Human Reproduction, confirms that there is in fact a correlation between the amount of time an embryo is cultured and the resulting baby’s birthweight. The study looked at more than 1,000 IVF babies born at the Family Federation of Finland Fertility Clinic in Helsinki, between 2000 and 2010, and found that embryos that were cultured for 5 to 6 days (blastocyst) produced larger babies than embryos cultured only two days. The authors recommend larger studies to analyze birthweight of IVF babies after blastocyst transfer.