But Dr. Philippe P. Hujoel from the University of Washington School of Dentistry in Seattle disagrees that all pregnant women need vitamin D supplements.
"In place of supplementation, I would recommend maintaining proper vitamin D levels during pregnancy the natural way - enjoy the sun, choose foods such as wild salmon, ahi tuna, mushrooms and eggs. Additionally, reducing carbohydrate intake will reduce the body's need for vitamin D," he told Reuters Health in an email.
"Avoid sugar. It is a necessary fuel for dental cavities and it burns up vitamin D," Hujoel added.