"deficiency of vitamin D results in poor muscular tone which may predict the need for C-Section"

It is hard to deny any longer the remarkable protective benefits of Vitamin D3.  There is even a website dedicated to its information and application, called the VitaminDCouncil.  The very first remedy that I'd heard improved by Vitamin D3 was the seasonal affective light disorder or SAD for short.  Always with the acronyms.  The prescription for this condition ranges between 1,000 to 4,000 IUs.  I don't know what is enough, but I do know that taking a lot more during the day is more beneficial.  Now you don't take 10,000 IUs all at once.  But taking 3,000 to 5,000 IUs three times a day will put your skin, your bones, and your brain in excellent condition.  

Why do we take vitamins to begin with?  To improve conditions without using pharmaceutical drugs, right; that, and to see if supplements can help us circumvent surgery.  Bill Sardi has an 2010 article on just this topic, "How to Avoid Ten Common Surgical Procedures With Dietary Supplements."  In this article he explains the cause why some women require a C-Section and why their 

On C-Sections, he writes

Of great interest is a recent report showing a deficiency of vitamin D results in poor muscular tone which may predict the need for C-Section.  Women with low Vitamin D levels were nearly three-times more likely toundergo C-Sections.  Vitamin D supplementation is suggested throughout pregnancy.  The 400-IU recommendation is insufficient to raise blood levels.  Daily doses of 2000IU of supplemental Vitamin D, and possibly 5,000 IU, are now suggested.  

Just as important were Sardi’spoints on Tonsillectomy.  He writes

Tonsillectomy has long been considered a “cash cow” for throat surgeons.  For more than seven decades physicians have debated whether surgical removal of tonsils in young children is beneficial.  Clearly, many needless tonsillectomies continue to be performed.  A recent hypothesis links tonsillectomy with low levels of Vitamin D.  With the realization that modern medicine offers nothing in regards to prevention, Vitamin D therapy and prevention should be explored and practiced.