Who has heard of this study that says vitamin D deficiency is the reason 93% of women have infertility?

So,I will try to post a link but there is a woman who found out she was extremely vitamin D deficient,then got pregnant shortly after. She found a study from Yale that says that 93% of women have infertility issues due to being vitamin D deficient,and that women do not need to be pumped full of drugs and chemicals to conceive,they just need safe doses of much needed Vitamins. Who has heard of this before? Has anybody else had a Dr. Find this and prescribe them Vitamin D and get pregnant shortly after?

https://www.youtube.com/watch?v=-SqXxXnpVho