Breast milk may not be enough.
A new study finds a high incidence of vitamin D deficiency Vitamin D Deficiency Definition
Vitamin D deficiency exists when the concentration of 25-hydroxy-vitamin D (25-OH-D) in the blood serum occurs at 12 ng/ml (nanograms/milliliter), or less. in breast-fed breast·feed or breast-feed
v. breast-fed , breast-feed·ing, breast-feeds
To feed (a baby) mother's milk from the breast; suckle.
To breastfeed a baby. babies, mostly during winter. Such a deficiency limits the body's use of calcium, which is essential for healthy bones and teeth.
As part of a trial of iron supplementation, Ekhard E. Ziegler of the University of Iowa Not to be confused with Iowa State University.
The first faculty offered instruction at the University in March 1855 to students in the Old Mechanics Building, situated where Seashore Hall is now. In September 1855, the student body numbered 124, of which, 41 were women. in Iowa City and his colleagues regularly took blood samples over 2 years from 84 newborns who were initially breastfed exclusively. The researchers noticed that few infants were getting supplemental vitamin D vitamin D
Any of a group of fat-soluble alcohols important in calcium metabolism in animals to form strong bones and teeth and prevent rickets and osteoporosis. It is formed by ultraviolet radiation (sunlight) of sterols (see steroid) present in the skin. .
The scientists evaluated vitamin D in the infants' blood. They report in the August Pediatrics that 78 percent of breastfeeding youngsters not receiving vitamin D in supplements were deficient in that nutrient during winter, but only 4 percent showed the deficiency in summer. None of the 49 infants getting vitamin supplements showed the deficiency at any time.
Iowa's northerly location keeps its residents from getting enough sun exposure in winter to produce much of the vitamin in their skin, the researchers note (SN: 10/16/04, p. 248). Although breast milk delivers vitamin D, mothers in the study were probably deficient in the vitamin during winter.
The current recommended dietary intake of 200 international units per day for nursing women isn't enough, says study coauthor Bruce W. Hollis of the Medical University of South Carolina “MUSC” redirects here. For Abel Santa María airport in Santa Clara, Cuba (ICAO code MUSC), see Abel Santa María Airport.
The Medical University of South Carolina . His earlier research (www.sciencenews.org/articles/20050430/food.asp) suggested that "lactating lac·tate 1
intr.v. lac·tat·ed, lac·tat·ing, lac·tates
To secrete or produce milk.
[Latin lact women need about 6,000 international units a day to ... supply adequate amounts to a nursing infant," he says.