Pregnancy success increased 30 percent if sunny (or vitamin D) one month earlier – June 2015

Pregnancy chances increase among women who soak up sun a month before IVF, Belgium study says NY Daily News

• Increased exposure to sunshine one month before conception could boost a woman's odds of getting pregnant through IVF by more than a third, according to the study out of Belgium.
• Dr. Frank Vandekerckhove, a reproduction specialist at University Hospital Ghent, found those exposed to more sunshine, less rain and higher temperatures one month before beginning an IVF cycle had better results.
• The study, which included more than 11,000 women, revealed the weather at the time of conception had no significance.
• "The month before is what's important, because that's when the egg is already starting to grow and mature," Vandekerckhove said.

Presented at European Society of Human Reproduction and Embryology’s annual conference in Lisbon

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Note: It would also help a lot if the sperm were given when there was lots of recent sunshine

See also VitaminDWiki

• Fertility and Sperm category listing has 142 items along with related searches
• Male infertility associated with low vitamin D levels – Dec 2012
• IVF 4X more successful for white women with lots of vitamin D – many studies
• Reproduction function in males improved by vitamin D – review Aug 2012
• Assisted Reproduction – 5 studies concluded vitamin D repletion helps – Review March 2015
• Vitamin D and fertility – Lerchbaum 2012, 2014
• Fertility and Vitamin D – several articles