WITHDRAWN: Vitamin D supplementation in pregnancy
Related Experiment Videos
Kassam Mahomed1, A Metin Gülmezoglu
1Ipswich Hospital, Ipswich, Queensland, Australia, 4305.
Background:
Vitamin D deficiency can occur in people whose diet is relatively low in the vitamin and those who are not exposed to much sunlight.
Objectives:
The objective of this review was to assess the effects of vitamin D supplementation on pregnancy outcome.
Search Strategy:
We searched the Cochrane Pregnancy and Childbirth Group trials register (October 2001) and the Cochrane Controlled Trials Register (Issue 3, 2001).
Selection Criteria:
Acceptably controlled trials of vitamin D supplementation during pregnancy.
Data Collection And Analysis:
One reviewer assessed trial quality and extracted data.
Main Results:
Two trials involving 232 women were included. In one trial the mothers had higher mean daily weight gain and lower number of low birthweight infants. In the other trial the supplemented group had lower birthweights.
Authors' Conclusions:
There is not enough evidence to evaluate the effects of vitamin D supplementation during pregnancy.
Related Concept Videos
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
Vitamins
Connective Tissue Cell Types
Fat cells (adipocytes), smooth muscle cells (myoblasts), and bone cells (osteoblasts) are some connective tissue cell types. Some immune system cells...
Teratogenicity
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...