Objective: Laboratory findings indicated that vitamin D might have a potent protective effect on breast cancer, but epidemiology studies reported conflicting results. The aim of the study was to conduct a systematic review and meta-analysis to clarify the efficacy of vitamin D supplementation on ...

Objective: To evaluate the efficacy of vitamin D supplementation on the prevention of postoperative vitamin D deficiency. Methods: PubMed, Embase, Web of Science, and Cochrane library were searched. Prospective studies evaluating the effects of vitamin D supplementation in patients who had und...

Purpose: To examine the association between maternal coffee consumption during pregnancy and the occurrence of neural tube defects (NTDs) in offspring. Methods: PubMed, Springer Link and Elsevier databases were searched up to August, 2014. Case-control and cohort studies published on the assoc...

Background/purpose: Dietary habits and nutrients have been associated with migraine. The present study comprises a meta-analysis of observational studies evaluating serum levels of 25-hydroxyvitamin D (25(OH)D) in patients with migraine and healthy controls. Methods: MEDLINE and Cochrane datab...

Background: Current studies suggest that vitamin D deficiency during pregnancy can produce a certain effect for preterm birth (PTB), but there is no research showing whether vitamin D deficiency has a consistent effect in different pregnancies; thus, we conducted a systematic review and meta-anal...

Background: Fish, rich in ω-3 polyunsaturated fatty acids, has been found to be associated with lower risk of several types of cancer risk, and beneficial for brain development. However, the association between fish intake and brain tumor risk is still inconsistent. Therefore, we conducted a meta...

Background: Circulating biomarkers of dairy fat provide objective measures of dairy fat intake and facilitate conclusions relevant to populations with different diets and susceptibility to cardiovascular diseases (CVD). Objective: To assess the relationship between circulating pentadecanoic ac...

Vitamin D metabolites enhance immunity to a wide range of respiratory pathogens in vitro. Numerous observational studies have investigated whether vitamin D deficiency is a risk factor for acute respiratory infection, and a number of clinical trials of vitamin D supplementation for the prevention...

BACKGROUND: Bovine colostrum is proposed as a nutritional countermeasure to the risk of upper respiratory symptoms (URS) during exercise training. The aim of this systematic review and meta-analysis was to estimate the size of the effect of bovine colostrum supplementation on URS. METHODS: Databa...

Background: Although many studies have shown that consumption of probiotics is relevant to diabetes, the effects of probiotics improves clinical outcomes in type 2 diabetes have yielded conflicting results. The aim of this meta-analysis was conducted to assess the effects of probiotics supplement...