Articles tagged with Vitamin D
A randomized double-blind clinical trial found that regular consumption of vitamin D-fortified yoghurt drink improved endothelial biomarkers in subjects with type 2 diabetes. Vitamin D levels were also elevated in most patients, leading to reduced cholesterol levels and insulin resistance.
Researchers at Intermountain Medical Center found that patients with excess vitamin D levels had a two and a half times greater risk of developing atrial fibrillation. The study suggests that communication between patients and healthcare providers is critical to determine safe doses of vitamin supplements.
Patients with recurrent inflammatory spinal cord diseases have significantly lower vitamin D levels compared to those with monophasic disease. The study suggests a common link between low vitamin D levels and immunologic dysregulation in these conditions.
Researchers at UH Rainbow Babies & Children's Hospital are conducting two studies to investigate the role of vitamin D in preventing heart disease and inflammation in HIV-positive individuals. The studies will explore the effects of vitamin D deficiency on immune system function, bone density, and cardiovascular health.
A large prospective cohort study found no relationship between baseline vitamin D levels and the frequency or timing of acute exacerbations of chronic obstructive pulmonary disease (COPD) in patients with severe COPD. Vitamin D supplementation is unlikely to have an effect on AECOPD risk in these patients.
A Stanford study found that Caucasians who avoid sun exposure have lower blood levels of vitamin D, with a 40% prevalence among all participants increasing to 53% and 56% among those wearing long sleeves and staying in the shade. The use of sunscreen did not significantly affect vitamin D levels due to insufficient application.
A study of 313 spine surgery patients found that more than half had inadequate vitamin D levels. Patients with insufficient vitamin D may benefit from taking supplements before and after surgery to aid in recovery.
Researchers find that providing obese adolescents with a daily dose of 4,000 IUs of vitamin D3 improves their vitamin D status. The study suggests that obese adolescents require higher doses due to reduced absorption in fat stores.
A new study led by Brown University found that vitamin D does not confer benefits against mortality in postmenopausal women, contrary to previous beliefs. The study controlled for key health factors like abdominal obesity and found no association between high or low levels of vitamin D and reduced risk of death.
Researchers found a significant north-south gradient in the association between latitude and incidence of Crohn's disease and ulcerative colitis in the US. Vitamin D supplementation may improve clinical activity in patients with Crohn's disease.
A six-month randomized controlled trial found no added benefit from high-dose vitamin D over and above ongoing low-dose vitamin D supplementation in treating relapsing-remitting multiple sclerosis. The study involved 23 participants with MS, who received either high-dose or placebo high-dose vitamin D, and showed no significant differe...
A new audit report reveals a growing problem of osteoporosis in the Middle East and Africa, with predicted major increases in fractures and significant socioeconomic impact. Widespread vitamin D deficiency and low calcium intake contribute to the issue.
A recent study found that peri- and postmenopausal women in Spain have a deficient intake of vitamin D, which increases the risk of health problems. The average total intake was just 39% of the RDA for women of this age group.
A three-step strategy for healthy bones and strong muscles is promoted by the International Osteoporosis Foundation, involving vitamin D intake, adequate calcium and protein in diet, and daily weight-bearing and muscle strengthening exercise. These components work together to optimize bone health and reduce falls and fractures in seniors.
Researchers discovered that vitamin D is essential for triggering an effective immune response against tuberculosis, a potentially fatal lung disease. They found that T-cells release a protein called interferon-γ that requires sufficient levels of vitamin D to activate immune cells and kill the bacteria.
A study by the American Society for Radiation Oncology found that nearly three-quarters of cancer patients have insufficient vitamin D levels, with those deficient experiencing more advanced cancer. Vitamin D supplementation showed promise in improving serum levels and potentially impacting treatment outcomes.
Researchers at the University of Leeds found that people with fair skin are more likely to have sub-optimal vitamin D levels. The study suggests that these individuals may need vitamin D supplements to maintain optimal health levels, particularly in areas with limited sunlight.
A nationwide study found that people taking oral steroids are twice as likely as the general population to have severe vitamin D deficiency. This increased risk is particularly pronounced for steroid users under 18, who were 14 times more likely to have a severe vitamin D deficiency.
Children with severe therapy-resistant asthma (STRA) have poorer lung function and worse symptoms due to lower levels of vitamin D. The study found that vitamin D deficiency is associated with increased airway smooth muscle mass, making breathing more difficult.
African-American men are up to 3.5 times more likely to have Vitamin D deficiency than Caucasian men, requiring higher supplementation doses. Skin color and sunlight exposure play a crucial role in Vitamin D production.
A study found that African-American men living in low-sunlight areas are more likely to have vitamin D deficiency. Researchers recommend stratified recommendations to consider group differences, as skin composition affects vitamin D production.
A new process boosts mushroom vitamin D content by 700%, while preserving essential nutrients like C and B vitamins. The UVB light processing technology has no adverse effects on mushrooms.
Researchers confirm vitamin D's role in slowing down colon cancer cell growth and proliferation. The study found that a lack of vitamin D increases the aggressiveness of colon cancer, highlighting its potential as an anti-tumor agent.
A study of 3,223 participants found that higher vitamin D levels were associated with an increased risk of nonmelanoma skin cancer (NMSC), particularly in cases not exposed to UV radiation. Despite this association, the relationship between vitamin D and NMSC remains complex due to inconsistent evidence.
High-dose vitamin D significantly reduces musculoskeletal pain and improves quality of life for breast cancer patients on aromatase inhibitors. The study found that high-dose vitamin D may also help maintain bone density, providing a potential tool to enhance treatment tolerability.
Research reveals high prevalence of vitamin D deficiency in psoriatic arthritis patients, but lacks correlation between vitamin D levels and disease activity. Vitamin D insufficiency was more common in northern regions during winter months.
A recent study by the American Orthopaedic Society for Sports Medicine found that 80% of NFL football players had vitamin D insufficiency. Players who suffered from muscle injuries had significantly lower levels of vitamin D, with African American players and those with injury-related time lost having particularly low levels.
A systematic review found that vitamin D3 supplementation increased survival in elderly women, particularly those at risk of falls and fractures. The study analyzed 50 randomized trials involving over 94,000 participants and suggested a reduced risk of mortality by approximately 6% with long-term treatment.
Research found vitamin D supplementation in healthy pregnant women to be both safe and effective, with no adverse effects on mothers or newborns. Daily dosages of up to 4,000 IU were necessary to reach optimal circulating levels of vitamin D.
A combination of calcium and vitamin D may cut the chance of melanoma in half for some women at high risk of developing this life-threatening skin cancer. The study found that women who took the calcium-vitamin D supplements developed 57 percent fewer melanomas than those who were not given the supplements.
Michael F. Holick, a renowned expert in vitamin D and skin research, has been awarded The Delbert A. Fisher Research Scholar Award from the Endocrine Society. He received this honor for his groundbreaking contributions to understanding the history of endocrinology.
A genetic and biochemical test has been developed to diagnose Idiopathic Infantile Hypercalcemia (IIH), a rare inherited disease affecting 600 Canadians. The test detects the defect behind vitamin D breakdown, resulting in excess calcium in the blood and calcification of organs.
Researchers found that maintaining vitamin D levels above 33 ng/ml significantly improves outcomes in patients taking bisphosphonates for osteoporosis and low bone mineral density. The study supports optimizing vitamin D levels to improve treatment effectiveness.
The Endocrine Society released a clinical practice guideline recommending vitamin D screening and dietary intakes for children and adults at risk of deficiency. Key findings include recommended daily intake ranges, from 400 IU/day for infants and 600 IU/day for adults, to prevent vitamin D deficiency.
Researchers found that women with low bone density are seven times more likely to benefit from bisphosphonate drugs when their vitamin D levels are above the recommended threshold. Maintaining adequate vitamin D levels is crucial for optimizing osteoporosis treatment, particularly in postmenopausal women.
Researchers aim to determine how vitamin D affects cardiac structure and function, vascular function, and left ventricular hypertrophy in blacks with hypertension. The study could identify vitamin D as a safe and effective therapy to stop or reverse cardiac ravages caused by high blood pressure.
African Americans with multiple sclerosis have lower vitamin D levels than those without the disease. The study suggests low vitamin D may be a risk factor for developing multiple sclerosis, but other factors such as genes and environmental triggers also play a role in disease severity.
A year-long study of 439 overweight-to-obese postmenopausal women found that losing more than 15% of their body weight significantly increases circulating vitamin D levels. This effect is independent of dietary intake and is not linear, with more substantial increases found in those who lose greater amounts of weight.
Researchers at the University of Copenhagen found a positive correlation between serum vitamin D levels and sperm motility in healthy men. Laboratory stimulation with activated vitamin D also increased forward movement of human spermatooza, sparking new hypotheses about the role of vitamin D in male reproduction.
Vitamin D deficiency is prevalent among African-American patients with MS, largely due to regional UV exposure and geographic factors. Low vitamin D levels were found in nearly 77% of MS patients compared to 71% without the disease.
Research suggests that children living in areas with limited sunlight are at higher risk of developing asthma. Vitamin D, synthesized through sun exposure, plays a crucial role in preventing the illness.
Researchers have identified a gene variant associated with the onset of chronic obstructive pulmonary disease (COPD) in Caucasian men. The study found that variants in the vitamin D receptor gene influence the time to development of COPD, highlighting the potential role of vitamin D metabolic pathways in COPD risk.
A study found that high doses of vitamin D supplementation on top of a standard rehabilitation program improves exercise capacity and respiratory muscle strength in patients with COPD. However, the treatment did not significantly improve health-related quality of life.
A new study published in Respirology reveals that adult patients with pneumonia who have vitamin D deficiency are more likely to die within the first 30 days after hospital admission. The researchers found no explanation for the association beyond patient age and other factors.
A University of Illinois study suggests that increasing dietary calcium and vitamin D or taking supplements can significantly increase bone mineral density and reduce hip fracture risk. The researchers recommend a 'portfolio diet' with adequate protein, less sodium, and more magnesium and potassium for optimal bone health.
Research found a significant link between low vitamin D levels and anemia in children, with black children at higher risk due to lower vitamin D levels. The study suggests that vitamin D deficiency may play a role in the development of anemia in this population.
A new study from Hasbro Children's Hospital found that 72% of girls and 91% of boys with obesity have low vitamin D levels. Treatment showed a significant increase in vitamin D levels, but only 28% normalized after one course, highlighting the need for further research.
A study found that vitamin D deficiency is associated with higher fat levels in both black and white children, but racial differences exist in fat tissue distribution. Vitamin D was also linked to lower levels of good cholesterol in all subjects.
A new study identifies vitamin D as a potential contributor to the racial disparity in blood pressure between Blacks and Whites. The research found that low vitamin D levels were associated with elevated blood pressure readings, accounting for a quarter of the difference between the two groups.
A recent study suggests that low vitamin D levels among black people may contribute to racial differences in hypertension. The research found that nearly 61% of blacks had vitamin D levels in the lowest one-fifth of the population sample, compared to 11% of whites.
A new study suggests that Vitamin D supplementation can improve vascular endothelial cell function and flow-mediated dilation in overweight African-American adults. This improvement in cardiovascular health can decrease the risk of heart disease.
Research suggests that high vitamin D levels are associated with a reduced risk of early age-related macular degeneration (AMD) in women under 75. Higher vitamin D intake from food and supplements is linked to lower AMD risk, while sun exposure does not show a significant correlation.
Research suggests Vitamin D supplementation improves vascular endothelial cell health, reducing cardiovascular disease risk in overweight African-American adults. The study found that supplementation with 60,000 IU monthly improved flow-mediated dilation, a key indicator of blood vessel health.
Women under 75 with high vitamin D levels have lower risk of early age-related macular degeneration (AMD), while those with low levels are at increased risk. The study found that women with 25-hydroxyvitamin D concentrations above 38 nanomoles per liter had a 44% decreased odds of developing AMD.
DNA can alter protein structure and function, leading to targeted therapies for diseases like osteoporosis and cancer. The study used HDX mass spectrometry to detect these long-range structural effects, revealing a complex biochemical dialogue between receptor, ligand, coregulatory proteins, and DNA.
Researchers found that vitamin D significantly reduced estrogen receptor-positive (ER+) breast cancer in both lean and obese mice, but had no effect on estrogen receptor-negative (ER-) cancer. Vitamin D also reversed insulin resistance in obese mice, while having no benefit in lean mice.
Research from the Emory/Georgia Tech Predictive Health Institute found that vitamin D deficiency is associated with stiffer arteries and impaired blood vessel function. Participants who increased their vitamin D levels showed improvements in vascular health and lower blood pressure.
A study found vitamin D deficiency is common in patients with alcoholic liver cirrhosis, with severity linked to liver dysfunction. The research highlights the importance of monitoring vitamin D levels in all cirrhosis patients, with further studies needed to determine optimal supplementation.
A recent study published in Archives of Neurology reveals a high prevalence of vitamin D insufficiency among patients with early Parkinson's disease. Contrary to expectations, the researchers found that vitamin D concentrations remained stable over time, suggesting a potential role for long-term insufficiency in the pathogenesis of PD.
A Swedish study found that sunlight influences the body's ability to break down medicines, with seasonal variations in drug concentrations closely linked to vitamin D levels. This may lead to increased sensitivity to certain medications, highlighting a new model for understanding individual differences in drug effects.