Active clinical trials for "Vitamin D Deficiency"

The main purpose of this study is to investigate whether and in which doses vitamin D intake is needed in order to maintain an adequate vitamin D status in 4-8 year-old Danish children during wintertime.

Adequate vitamin D is essential for proper infant growth and development. However, human milk is low in vitamin D, and most infants do not receive recommended supplementation. Our aim is to assess the feasibility of providing adequate vitamin D to breastfed infants through maternal vitamin D supplementation. Forty non-pregnant, lactating women at least 18 years of age with exclusively breastfed infants between the ages of 1 and 6 months will be randomized to receive oral vitamin D as either 5,000 IU daily for 28 days or 150,000 IU as a single dose. Maternal serum calcium, phosphorus, vitamin D and 25(OH)D; maternal urinary calcium; maternal milk vitamin D and 25(OH)D will be measured on days 0, 1, 3, 7, 14, and 28 of the study; and infant serum vitamin D and 25(OH)D will be measured on days 0 and 28.

The purpose of this study is to determine whether a weekly supplement of vitamin D to low birth weight term infants will reduce their mortality and hospital admissions and improve their immunity.

The aim of this randomised clinical trial study is to evaluate whether supplementation with vitamin D could reduce the risk of uterine fibroids in reproductive stage women.

The proposed study will examine vitamin D bioavailability when 20µg of vitamin D is consumed in 5 different forms: i) a vitamin D enriched pre-formed mixed micelle dairy drink ii) a vitamin D enriched olive oil dairy drink iii) a vitamin D enriched fish oil dairy drink iv) a vitamin D enriched fat-free dairy drink

A longitudinal, triple-blinded, randomized, placebo-controlled trial, with a 7-month follow-up period is conducted between October 2016 to April 2017.

The purpose of the study is to examine the vitamin D state of elder patients in therapeutic departments and to compere the treatment during the hospitalization with the out-patient treatment.

the aim of this randomised clinical trial study is to evaluate whether supplementation with vitamin D could inhibit the growth of uterine fibroids in reproductive stage women.

Vitamin D is so-called "sunshine vitamin",it is synthesized in the skin during exposure to the ultraviolet rays in sunlight so it has been suggested that ∼ 5-30 minutes of sun exposure between 10:00 a.m. and 3:00 p.m. at least twice per week on the skin of the face, arms, back, or legs (without sunscreen) is usually adequate for vitamin D synthesis. Vitamin D is also found in plants (mainly mushrooms and yeast) and in a few foods such as fatty fish. Vitamin D supplement is recommended in all infants until enough formula, milk, or other food sources are ingested to sufficiently provide 400 IU/day to prevent vitamin D deficiency. Type 1 diabetes is an autoimmune disease, and the self immune system plays a central role in the destruction of the beta cell of pancrease.

The investigators hypothesize that the chronic kidney disease patients who suffer from vitamin D deficiency will be benefit from given Vitamin D2 because coronary artery calcification and hyperparathyroidism will be improved.