Why You Don't Want to Conceive a Baby in May
Your baby will be at higher risk of prematurity: study
By Evann Gastaldo, Newser Staff
Posted Jul 10, 2013 11:55 AM CDT

(Newser) – Babies conceived in May are 10% more likely to be premature, a new Princeton University study finds. And since premature babies have a higher risk of suffering from asthma, learning disabilities, and developmental problems, you may want to avoid getting pregnant during that particular month. Why May? The authors think it's because the third trimester arrives right around flu season; the flu is known to contribute to early delivery, Time reports. In general, the study found babies conceived in the first half of the year spent less time in the womb, but May was the worst month, the Los Angeles Times reports.

The study also found that infants conceived in the summer were heavier than other infants—just about a third of an ounce heavier, but that's significant for a baby. Previous studies have also found differences between babies born in different seasons, but those studies highlighted factors like the mother's socioeconomic status. This study compared siblings in order to neutralize factors like that, and found that no matter what your socioeconomic status, certain months are just more "unfavorable" in which to get pregnant.

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Showing 3 of 10 comments
Jul 10, 2013 3:12 PM CDT
The biggest reason I can see not to conceive in May, is that one is large and clumsy during the worst of winter, which increases your chance of falling.
Jul 10, 2013 1:47 PM CDT
Omg, never conceive a baybay in May. Because it's like, beach season, right. Like, who wants to be getting an abortion, like, during beach season. Ca'mone Planned Parent Hood, like, get the word out. Texas is trying to extend the abortion, window, so we can, like, wait till after beach season, ya know. Like, no duh, right.
Jul 10, 2013 12:06 PM CDT
And they pay people to do studies like this? What a waste of money.