VITAMIN D DEFICIENCY

This study tests whether adding calcitriol to vitamin D2 helps children with cholestatic liver disease correct their vitamin D deficiency faster than vitamin D2 alone. Cholestasis makes it hard for the body to absorb vitamin D. The trial will enroll 54 children and track vitamin …

This study looks at whether vitamin D levels and supplements can reduce inflammation in people with gum disease (periodontitis or gingivitis). Researchers will measure markers of inflammation in blood and gum fluid before and after treatment. The study involves 120 adults with di…

This study looks at whether taking vitamin D supplements during standard chemotherapy can help more tumors disappear in people with triple-negative breast cancer who are low in vitamin D. About 50 participants will receive vitamin D plus chemotherapy, and researchers will compare…

This study tests whether taking vitamin D daily for 6 months can improve menstrual regularity and mood in teenage girls with PCOS who also have low vitamin D levels. Sixty participants will be randomly assigned to receive either vitamin D or a placebo, and neither they nor their …

This study looks at whether adding regular exercise (treadmill walking) to vitamin D supplements can improve erectile function in men with type 2 diabetes who also have low vitamin D. Forty men will take vitamin D every two weeks for 12 weeks; half will also walk three times a we…

This study compares two different vitamin D3 supplements to see which one raises vitamin D levels faster and more effectively in adults who are low in vitamin D. About 20 people will take one of the two supplements daily for eight weeks. The goal is to find the best way to correc…

This study is testing whether giving high doses of vitamin D3 to critically ill patients with very low vitamin D levels can reduce the chance of death within 28 days. The trial will include 2,400 adults in intensive care units. If successful, this cheap and easy treatment could b…

This study tests whether vitamin D3 supplements can improve heart health in Chinese teenagers who are overweight or obese and have low vitamin D levels. 130 participants will receive either vitamin D3 or a placebo for 12 weeks. Researchers will measure changes in blood pressure, …

This study compares two different doses of vitamin D3 supplements in pregnant women who have low vitamin D levels. The goal is to see if a higher dose (50,000 IU every two weeks) is better than a lower dose (5,000 IU weekly) at preventing preeclampsia, a serious pregnancy complic…

This study looks at how low vitamin D levels affect balance and the way muscles respond to movement. Researchers will compare adults with vitamin D deficiency to healthy adults using simple standing tests and muscle sensors. No treatments or blood draws are involved—just one sess…

This study is checking if pregnant women with low vitamin D are more likely to have a dangerous drop in blood pressure during a C-section when they get spinal anesthesia. Researchers will measure vitamin D levels before surgery and watch blood pressure closely during the procedur…