If you are trying to conceive with IVF, you might worry that the weather or the season will hurt your chances. This research followed 1,413 patients at a reproductive medicine center to see if the time of year changed their results. They looked at everything from how many embryos formed to whether a pregnancy continued to a live birth.
The main finding is reassuring: the season did not significantly affect your positive pregnancy test, clinical pregnancy rate, miscarriage rate, or live birth rate. In plain terms, getting pregnant in the spring is not better or worse than doing it in the winter for these major outcomes. Even the general quality of the embryos and the data did not differ between the four seasons.
There were a few small differences in specific lab numbers, like the rate of blastocyst formation being slightly higher in spring or the number of mature eggs being higher in 2019. However, these did not translate into better pregnancy results for the patients. No safety issues or side effects were reported during the study. While the study looked at many factors, it is important to remember that this was a review of past records, and the results apply to the specific group studied.