Seasonal variation, temperature, day length, and IVF outcomes from fresh cycles

ConclusionsWe found that season at oocyte retrieval was not associated with livebirth, contrary to patterns seen in naturally conceived populations. However, our data did suggest modestly higher odds of clinical pregnancy for retrievals in June and July, and that higher temperature at time of retrieval was associated with higher odds of clinical pregnancy but not livebirth.
Source: Journal of Assisted Reproduction and Genetics - Category: Reproduction Medicine Source Type: research