Active clinical trials for "Avitaminosis"

This case-control study aims to investigate the association between B vitamins and gestational hypertension or preeclampsia.

500 participants of the vegan/vegetarian congress VegMed are to be included, which should answer once (cross-sectional study) a medicine socio-behaviorist questionnaire on the topic "supplementation of critical nutrients in a plant-based diet" at the VegMed congress on 21/04/2018. The aim of the study is to understand how experts in this field behave and whether actions taken follow official recommendations.

The purpose of the study is to describe vitamin D status among patients with type 2 diabetes and to determine the association between serum 25-hydroxyvitamin D and glycemic control, markers of inflammation and blood pressure

Vitamin D is an essential nutrient. Deficiency of vitamin D is widespread. The prevalence of vitamin D deficiency in early preterm infants is unknown. The American Academy of Pediatrics recommends a daily intake of 400 IU in order to achieve a serum concentration of 20 ng/ml of vitamin D. This recommendation presumes exposure to sunlight, the best source of vitamin D. This study assesses vitamin D status at birth and during hospital stay in infants delivered delivered at earlier than or at 32 weeks gestation. We also assess the adequacy of intake relative to the target set by the American Academy of Pediatrics for children.

Patients undergoing bariatric surgery often develop new vitamin and/or mineral deficiencies or exacerbate prior deficiencies after surgery. Several bariatric supplement products exist including oral tablets and transdermal patches. The purpose of this study is to observe the concentrations of serum micronutrients and determine how many deficiencies develop in patients who use a transdermal patch.