For women struggling with infertility, assisted reproductive technology (ART), including the transfer of fertilized human eggs into a woman’s uterus, commonly referred to as in vitro fertilization (IVF), is often their final solution for becoming pregnant, but even this option does not guarantee 100 percent certainty. A team of Italian researchers has concluded a study suggesting that a deficiency of vitamin D, a steroid hormone that is naturally produced in the skin, may be standing between women undergoing IVF and a successful pregnancy.