A report published in the April 2009 issue of the medical journal Acta Pædiatrica shows, for the first time, a correlation between babies conceived in April, May, June, or July, and birth defects. Those conceived in the spring and summer months have a higher overall rate of birth defects such as spina bifida, cleft lip, clubfoot and Down's syndrome. In fact, half of the 22 categories of birth defects had a statistically significant correlation to time of conception. The study compiled data from the 30.1 million births that occurred in the U.S. between 1996 and 2002. That's not just a lot of Gerber's, but a serious amount of informative material.