Articles tagged with Vitamin D
Researchers found that daily intakes of vitamin D in the range of 4000-8000 IU/day are needed to maintain blood levels of vitamin D metabolites and reduce the risk of several diseases by half. The recommended minimum daily intake is only 600 IU/day.
A study published in Neurology found that people with higher sun exposure and vitamin D levels were less likely to develop multiple sclerosis. The researchers also discovered that increased UV light exposure and skin damage from sun exposure reduced the risk of developing the disease.
Researchers found that vitamin D-deficient mice had reduced lung volume, lower airway resistance, and smaller lungs compared to control mice. The study suggests a potential link between vitamin D deficiency and obstructive lung disease, highlighting the need for future studies on prevention and treatment strategies.
Patients with quiescent Crohn's disease exhibit a 30% decrease in vitamin D2 absorption capacity compared to healthy individuals. A vitamin D bioavailability test is essential for assessing malabsorption and guiding therapeutic dosing.
A new study found that supplementing antibiotics with high-dose vitamin D can significantly reduce the time needed for TB bacteria to clear from sputum culture by almost a week in patients with specific genetic profiles. The treatment improved response in those with the tt genotype of the TaqI vitamin D receptor polymorphism.
New research shows vitamin D can speed up antibiotic treatment of tuberculosis (TB), clearing bacteria from the lungs in just 5 weeks for certain patients. Vitamin D deficiency is a common problem among TB patients, and those with a specific genetic type of vitamin D receptor responded better to supplementation.
A study found that vitamin D deficiencies are prevalent among patients with autoimmune lung diseases, particularly those with connective tissue disease. The study suggests a potential role for vitamin D in the development of these diseases and improving lung function.
A study published in Pediatrics found that newborns with low vitamin D levels are at increased risk of developing respiratory infections and wheezing during early childhood. The research suggests that vitamin D is crucial to the immune system, particularly in preventing acute respiratory infections.
A New Delhi study found that 76.7% of hip fracture patients were vitamin D deficient, with elevated PTH levels also common. The research suggests vitamin D levels may be a useful index for assessing hip fracture risk in elderly people.
Experts flag vitamin D deficiency as a major concern in the region, with severe deficiency across India and Pakistan. Interactive maps tracking vitamin D levels by region are being developed to identify problem areas and stimulate research studies.
A recent study found that lower and higher vitamin D levels are associated with an increased likelihood of frailty in older women. Women with optimal vitamin D levels (20.0-29.9 ng/ml) were at the lowest risk, while those with levels below 20 ng/ml or above 30 ng/ml had a higher risk of frailty.
Researchers at UC Davis Health System found significantly reduced vitamin D levels in patients with metabolic syndrome living in Northern California. The study suggests that supplementation with vitamin D may reduce the risk of diabetes and heart disease, contradicting previous assumptions about adequate sun exposure in sunny latitudes.
Researchers found that genetics play a significant role in determining vitamin D status during the winter months. Lifestyle choices and sun exposure are more influential in maintaining optimal vitamin D levels during the summer.
A new report from Johns Hopkins Medicine finds that low levels of vitamin D increase the risk of stroke in white adults, but not in black adults. Despite higher rates of vitamin D deficiency in African Americans, they have a lower likelihood of severe strokes due to other factors such as hypertension and diabetes.
A study of 7,981 black and white adults found no link between fatal strokes and vitamin D deficiency among blacks. In contrast, whites with deficient vitamin D levels had a doubled risk of dying from a stroke compared to those with higher levels.
A University of Michigan study found that children with low vitamin D levels accumulated fat around the waist and gained weight more rapidly than those with sufficient vitamin D. Vitamin D deficiency was also linked to slower growth in height among girls but not boys.
A study of 28 pregnant women with MS found that lower vitamin D levels during pregnancy and breastfeeding were not associated with an increased risk of relapse after childbirth. However, women who breastfed exclusively had lower postpartum vitamin D levels, which may be related to the duration of breastfeeding rather than a causal link.
The VITAL study found that paricalcitol reduced residual albuminuria in patients with type 2 diabetic nephropathy, particularly those with high dietary sodium intake. The study suggests that paricalcitol could be an important adjunctive treatment for kidney protection in resistant diabetes patients.
Researchers found that CLL patients with insufficient vitamin D levels progressed faster, were twice as likely to die, and had shorter survival times. Vitamin D supplements may offer a way to slow leukemia progression.
Researchers are exploring the potential link between vitamin D intake and a protein that may help prevent Barrett's esophagus from turning into cancer. Patients with Barrett's esophagus will take vitamin D weekly for four months to measure its effects on esophageal cancer risk.
A significant increase in lung transplant rejection was found in patients with vitamin D deficiency. The study suggests that optimal vitamin D levels are critical for positive outcomes in lung transplant patients.
A new study found that Vitamin D deficiency is associated with a higher rate of abnormal bone density and osteoporosis in IBD patients. The study, which included 161 patients, revealed that nearly half of those with IBD under age 50 had reduced bone density.
Research suggests a connection between vitamin D levels and skin cancer risk in individuals with basal cell nevus syndrome. Patients with this condition are found to be more likely to have low vitamin D levels, even when taking sun protection measures.
A study published in the Journal of Bone and Joint Surgery found that 43% of patients undergoing orthopaedic surgery have insufficient vitamin D levels. Vitamin D is essential for bone growth and absorption of calcium. Patients are advised to screen for low levels before surgery, as deficiency may negatively impact patient outcomes.
A study by Hospital for Special Surgery reveals that vitamin D deficiency affects up to 50% of patients undergoing orthopedic surgery, hindering bone healing and muscle function. Researchers recommend correcting deficient levels before surgery to improve patient outcomes.
A new Cochrane Systematic Review found that vitamin D supplements have no effect on bone density in healthy children. However, children with low levels of vitamin D may benefit from supplementation.
Vitamin D deficiency is associated with a higher likelihood of aggressive breast cancer in African-American women. Vitamin D levels were found to be 29.8 ng/ml in white women and 19.3 ng/ml in African-American women.
A new report by the International Osteoporosis Foundation reveals poor post-fracture care in the region, with high mortality rates after hip fractures. The report predicts a significant increase in osteoporotic fractures due to aging populations and limited access to diagnostic tests and medication.
Boston University School of Medicine researchers are developing a portable fluorescent lamp to produce vitamin D in patients with fat malabsorption syndromes. The study aims to determine the effectiveness of this device in increasing blood levels of 25-hydroxyvitamin D, with initial results expected in the spring of 2011.
Researchers found that participants who consumed the most milk products lost more weight on average than those with low or no milk consumption. Higher blood levels of vitamin D also predicted successful weight loss.
Researchers explore how genetic variations interact with environmental factors like nicotine, vitamin D, and EBV to accelerate multiple sclerosis progression. The two-year project aims to identify gene-environmental interactions that can inform preventive and therapeutic strategies.
Researchers found that vitamin D supplementation reduced the development of endometrial cancer in obese mice by 60%, compared to those not treated with the supplement. The study suggests that vitamin D may offer a simple way to reduce endometrial cancer risk for women, particularly those who are overweight or obese.
A new study found that adults who drank the most milk and had high vitamin D levels lost more weight than those with low dairy calcium intake. The researchers also discovered that boosting key milk nutrients could aid in successful weight loss.
Researchers found that vitamin D can reduce the production of a protein driving an allergic response in cystic fibrosis patients and increase production of proteins promoting tolerance. The findings support a potential clinical trial to prevent or treat Allergic Bronchopulmonary Aspergillosis (ABPA) in these patients.
Research reveals vitamin D's impact on multiple sclerosis, rheumatoid arthritis, type 1 diabetes, cancers, and dementia. The study identified 2,776 binding sites for the vitamin D receptor across the genome.
A study mapping vitamin D receptor genome-wide connections autoimmune disease and cancer genes reveals novel links of vitamin D with disease predisposition. Vitamin D insufficiency is a growing concern worldwide, especially for individuals genetically predisposed to be sensitive to deficiency.
Research at LSU Health Sciences Center found that vitamin D can reduce allergic responses to Aspergillus fumigatus, a common mold that causes severe allergic symptoms in asthmatics and Cystic Fibrosis patients. Vitamin D also increased production of proteins promoting tolerance.
A recent study found that narrowband UV-B treatment can increase serum levels of vitamin D in patients with psoriasis while clearing the condition. The study also showed significant improvements in psoriasis severity scores and dermatology-related quality of life.
A leading international expert in vitamin D, Anthony Norman, recommends increasing daily intake to 2,000-4,000 IU for most adults to maximize health benefits. This could effectively eradicate rickets in infants and reduce the frequency of diseases such as cancer, cardiovascular disease, and autoimmune type-1 diabetes.
A new study published in The Journal of Clinical Endocrinology & Metabolism found that vitamin D deficiency is associated with increased arterial stiffness in black teens. Researchers discovered that higher doses of vitamin D supplementation (2,000 IU) improved cardiovascular health and reduced central arterial stiffness.
The new guidelines update Osteoporosis Canada's recommendations on vitamin D intake for Canadians, citing the need for more research into optimal doses and safe upper limits. The recommended daily supplements range from 400-1000 IU for adults under 50, with higher doses required for those over 50.
A new study reveals that low vitamin D levels can predict the development of Parkinson's disease, with individuals having the lowest levels being three times more likely to develop the condition. Researchers are calling for public health authorities to consider raising the target vitamin D level above the current recommended level.
The new guidelines recommend daily supplements of 400 to 1000 IU for adults under 50 without osteoporosis, increasing to 800-2000 IU for those over 50. Canadians can safely take daily vitamin D supplements up to 2000 IU without medical supervision.
Researchers found that low vitamin D levels are associated with cognitive decline in older adults, particularly in executive function. The study, which assessed 858 adults over six years, showed a 60% increased risk of substantial cognitive decline among those with severely deficient vitamin D levels.
A study by Dr. David J. Llewellyn found that vitamin D deficiency is associated with a higher risk of substantial general cognitive decline and new problems with mental flexibility. The research involved over 850 older adults, showing that those with severe vitamin D deficiencies were 60% more likely to experience cognitive decline.
A 29-year follow-up study of Finnish men and women found that individuals with higher vitamin D levels had a significantly lower risk of developing Parkinson's disease. The study suggests a potential link between chronic inadequacy of vitamin D and the development of Parkinson's disease.
The study found that the vitamin D receptor helps regulate bacterial activity, responds to cues, and counters their presence. It also plays a key role in defending against Salmonella infection and squelching inflammation by binding to NF-Kappa B and preventing it from activating other inflammatory molecules.
A new study found nearly half of the elderly Dutch population had vitamin D deficiency, which may increase the risk of metabolic syndrome. The condition is characterized by high blood pressure, abdominal obesity, abnormal cholesterol profile, and high blood sugar.
A study found that vitamin D levels were associated with better cognitive performance in elderly individuals receiving home care. Those with sufficient vitamin D blood levels performed better on executive function tests, suggesting a potential link between vitamin D and mental agility.
Researchers found that tanning is a response to varying levels of ultraviolet radiation, particularly in middle and high latitudes. This adaptation helps protect humans from harmful effects of sunlight, including vitamin D deficiency and folate destruction.
A new study found that low vitamin D levels are associated with poor blood sugar control in patients with Type 2 diabetes. The research, presented at The Endocrine Society's 92nd Annual Meeting, suggests that vitamin D supplementation may improve health outcomes for this prevalent condition.
Two studies confirm vitamin D deficiency is prevalent among patients with rheumatic conditions, including RA and osteoporosis. Supplementation with recommended daily doses fails to normalize vitamin D levels, highlighting the need for further research on effective treatment strategies.
A new model developed by researchers predicts an individual's vitamin D requirements based on their skin tone, sun exposure, and dietary habits. The model suggests that individuals with relatively low sun exposure may need additional vitamin D to reach a target blood level of 75 nanomoles per liter.
A genome-wide study has identified four common gene variants associated with blood levels of vitamin D and an increased risk of vitamin D deficiency. Individuals inheriting multiple risk-associated variants had more than twice the risk of vitamin D deficiency as those without these variants.
A genome-wide association study found three genetic variants significantly associated with vitamin D concentrations and risk of insufficiency. Participants with certain genotypes were at two-and-a-half times increased risk of having low vitamin D levels, highlighting the importance of genetic factors in regulating vitamin D status.
The incidence of calcium-alkali syndrome is rising due to widespread use of over-the-counter calcium supplements. Limiting daily intake to 1.2-1.5 grams can prevent the condition.
Agricultural Research Service scientists have developed a new model to manipulate vitamin D levels in young calves, which could help establish the optimal amount needed for growth and health. The model uses vitamin D injections to control levels in the bloodstream of neonatal dairy calves.
A recent study reveals that seven out of ten pregnant women in the United States have insufficient vitamin D levels. Prenatal vitamins may not be enough to meet the needs of all women, particularly those with darker skin or living in regions with limited sunlight during winter months.
A recent study has found that high-dose vitamin D supplementation is associated with an increased risk of falls and fractures in older women. The research, published in the Journal of the American Medical Association (JAMA), revealed that women who received a single annual high dose of vitamin D had a higher rate of falls and fractures...
The International Osteoporosis Foundation recommends optimal vitamin D status through serum 25OHD levels and effective sun exposure. Vitamin D deficiency is associated with decreased muscle strength, increased risk of falls and osteoporotic fractures.