Articles tagged with Vitamin D
A UK study found no link between calcium supplementation, with or without vitamin D, and hospital admissions or mortality due to cardiovascular events. The analysis of the UK Biobank dataset showed that calcium supplementation did not increase the risk of future cardiac events.
Researchers found that adequate vitamin D levels can prevent all types of invasive cancer combined. The study suggests a reduced risk of cancer at serum 25-hydroxyvitamin D concentrations of 40 ng/ml or greater.
A new study from Brazil found that skin tanning protects against harmful UV irradiation but limits the skin's ability to produce vitamin D. The study, which evaluated 986 participants, showed that 72% had vitamin D deficiency and most people exposed to high levels of sunlight were deficient.
A study from Intermountain Medical Center Heart Institute found that low levels of both total vitamin D and bioavailable vitamin D are associated with poor cardiovascular outcomes, including heart attacks. The research evaluated 4,200 participants and discovered that measuring these two components is crucial in predicting major adverse...
A new study from the University of Kansas suggests that a mother's increased vitamin D levels during the second trimester may lower her child's chance of developing asthma. The research found that increased sunlight exposure, which is where Americans get most of their vitamin D, reduces the risk of asthma in children.
A Finnish study found that vegans often follow an unbalanced diet, leading to deficiencies in vitamin B12, D, selenium, iodine, and essential fatty acids. Vegans tend to use recommended supplements, such as calcium-fortified drinks and vitamin D supplements, but may need closer monitoring of their nutrient intake.
A study of 413 patients with symptomatic knee osteoarthritis found that vitamin D supplementation did not slow cartilage loss or reduce knee pain over 2 years. Vitamin D levels increased, but no significant benefits were seen.
Children born to mothers with vitamin D deficiency during early pregnancy are at a higher risk of developing multiple sclerosis (MS) in adulthood. The study found a significant association between maternal vitamin D levels and MS risk in offspring.
A Stanford study found that vitamin D deficiency in mice leads to faster-growing and more aggressive breast cancer tumors. Researchers also identified a direct link between vitamin D levels and the expression of the ID1 gene, which plays a role in tumor growth and metastasis.
A new study found that vitamin D supplementation during pregnancy can increase bone mass in babies born during the winter months, potentially leading to stronger bones and a reduced risk of osteoporosis. The supplement showed no difference in overall bone mass but had a positive impact on children born during the colder months.
A new study by Northwestern University research found that low levels of vitamin D are associated with aggressive prostate cancer in men. Men with dark skin or limited sun exposure should get their vitamin D levels checked and supplement if necessary to reduce the risk of aggressive prostate cancer.
A randomized controlled trial found that vitamin D supplements during pregnancy have no significant effect on the bone density of babies. However, further analysis suggests that supplementation may counteract the seasonal drop in vitamin D levels caused by lack of sunlight, potentially improving bone health in winter-born babies.
Children breastfeeding after their first birthday should take a vitamin D supplement to prevent health problems like rickets. Vitamin D levels in breastfed children decrease rapidly after the first birthday, increasing the risk of deficiency by up to 29% by age three.
Higher intake of food-based vitamin D during pregnancy was associated with reduced risk of development of allergies in children. Vitamin D modulates the immune system and its potential role in asthma and allergy has been of interest.
Researchers found diabetic rats fed an egg-based diet had higher concentrations of vitamin D, improved blood glucose levels, and gained less weight. The study suggests that eating whole eggs, including the yolk, may be beneficial for diabetics with vitamin D deficiency.
A new study from the University of Eastern Finland found that children who drink at least three glasses of milk per day have higher serum vitamin D levels than their peers. The use of vitamin D supplements and regular exercise also contribute to improved vitamin D levels in children.
Researchers have developed a new sunscreen called Solar D that maximizes vitamin D production while maintaining its SPF. The study found that Solar D allowed for up to 50% more production of vitamin D in-vitro compared to a popular commercial sunscreen, potentially reducing the risk of vitamin D deficiency and related health problems.
Two randomized trials examine the effect of vitamin D supplementation during pregnancy on asthma and persistent wheezing in offspring. While no significant protective effect was found, a clinically important effect could not be excluded, suggesting further studies are needed.
A study of wild sheep on St Kilda island found that high levels of vitamin D are associated with improved fertility and reproductive success. Sheep with higher vitamin D levels had more lambs in the following spring, suggesting an evolutionary advantage.
A study by UC San Diego researchers found that populations living at high latitudes with limited sunlight exposure are at a higher risk of developing leukemia due to low vitamin D levels. This epidemic of vitamin D deficiency in winter populations contributes significantly to the burden of leukemia worldwide.
A randomized clinical trial found that higher monthly doses of vitamin D were associated with an increased risk of falls in patients 70 or older. The study also showed that these high doses had no benefit on improving lower extremity function.
A study found that taking high-dose vitamin D3 supplements can reduce the percentage of T cells related to MS activity, leading to a decrease in interleukin 17 levels. The results suggest that vitamin D may be an inexpensive, safe, and convenient treatment option for people with multiple sclerosis.
Researchers found that high doses of vitamin D3 supplements reduced inflammation and disease activity in people with relapsing-remitting MS. The study suggests vitamin D may be a potential treatment option for managing MS symptoms.
A recent study found no link between vitamin D deficiency and increased risk or severity of obstructive sleep apnea (OSA) in elderly men. The study suggests that taking additional vitamin D supplements is unlikely to prevent or improve OSA.
A new Johns Hopkins study of over 930,000 patient records found that patients undergoing bariatric surgery during winter months fared worse than those in the summer due to lower vitamin D levels. The researchers also noticed a disproportionate number of complications occurred north of latitude 37 degrees.
A randomized clinical trial found that vitamin D2 supplements did not reduce the need for anemia drugs in dialysis patients. The study, published in the Journal of the American Society of Nephrology, suggests that nutritional vitamin D may have no role in treating anemia in patients with chronic kidney disease or kidney failure.
Active individuals participating in high-impact activities may need higher vitamin D levels to reduce stress fracture risk, according to recent study findings. The researchers recommend maintaining serum vitamin D levels of at least 40 ng/mL to protect against stress fractures.
Research studies presented at the IOF regional meeting found significantly low levels of vitamin D in different population groups across the Middle East. The studies revealed high prevalence of vitamin D deficiency, affecting all age groups, sexes and local/non-local populations.
A PhD project from the National Food Institute found that certain genetic variations increase the risk of lower vitamin D levels in Danes. The study identified two genes, CYP2R1 and GC, as influencers of vitamin D status. Genetic predisposition may be used to identify individuals at risk of lower vitamin D levels.
A randomized controlled trial found that vitamin D supplementation did not reduce the number or severity of colds in adults with mild-to-moderate asthma. Achieving normal levels of vitamin D made no difference in cold frequency or severity, contradicting previous findings.
A University of Georgia researcher found that low levels of vitamin D can hinder the effectiveness of HIV treatment in adults. Participants with sufficient vitamin D levels recovered more of their immune function, on average 65 CD4+T cells more, compared to those with deficiency.
Researchers found a link between vitamin D levels and heart problems, with patients at risk if their level is below 15 nanograms per milliliter. The study evaluated over 230,000 patients and found that those above 15 ng/ml had a 35% increased risk of cardiovascular events.
A study by ETH Zurich researchers found that a serum concentration of around 40 micrograms of vitamin D per litre of serum is ideal for slowing or preventing bone degeneration in postmenopausal women. The study showed that daily vitamin D supplements can increase calcium absorption and reduce bone degeneration.
A preliminary study suggests that taking vitamin D supplements daily can improve exercise performance by increasing cycling distance and reducing physical exertion signs. The study also found lower blood pressure and cortisol levels in participants, indicating a potential link between vitamin D and cardiovascular health.
Researchers found that patients taking calcium supplements had lower urine calcium and oxalate levels but faster kidney stone growth rates. Vitamin D supplementation decreased urinary calcium excretion and stone growth rates, potentially preventing stone formation.
Researchers found no significant difference in new polyp formation between patients with vitamin D and/or calcium supplements and those without. The study's results contradict previous findings in models and smaller human trials, highlighting the need for further research on promising cancer prevention strategies.
A £3.5 million grant will fund a trial to determine whether a weekly vitamin D supplement can prevent tuberculosis (TB) in 5,400 primary schoolchildren in Cape Town. The trial aims to discover whether the supplement can reduce the risk of acquiring latent TB infection, which may develop into active TB later in life.
Research published in Heliyon found that women born in summer months were more likely to be healthy adults, with slightly higher birth weights and later onset of puberty. This effect is thought to be linked to increased vitamin D exposure during pregnancy, which can influence childhood growth and development.
A study of people with multiple sclerosis found that those who spent time in the sun every day during their teenage years developed the disease later than those who did not. The study also found that people who were overweight at age 20 developed the disease earlier than those who were average weight or underweight.
A new study demonstrates that vitamin D3 supplementation can increase muscle strength in postmenopausal women by up to 25.3% and reduce the loss of muscle mass, while also reducing the risk of falls. The trial found that vitamin D supplements provided significant protection against sarcopenia, a degenerative loss of skeletal muscle.
Research shows that people carrying specific genetic variants of vitamin D metabolism can benefit from a high-protein weight loss diet, leading to improved insulin resistance and blood sugar control. The study found significant interactions between the DHCR7 variant and dietary protein, but not with other genetic variants or dietary fat.
A study of nearly 400 participants aged 76+ found that low vitamin D levels accelerate cognitive decline and increase dementia risk. Individuals with dark skin or insufficiency were disproportionately affected.
A study found that vitamin D insufficiency was associated with a faster decline in cognitive functions among older adults. The research, published in JAMA Neurology, revealed that African American and Hispanic individuals were more likely to have vitamin D insufficiency or deficiency. Participants with inadequate vitamin D levels exper...
A study by Johns Hopkins Medicine reveals that many obese people are malnourished before weight loss surgery. The research highlights the importance of addressing nutritional deficiencies to reduce surgical complications and improve overall health after the procedure.
A study published in JAMA Neurology found that people with low vitamin D levels experience rapid cognitive decline over time compared to those with adequate levels. Researchers recommend daily vitamin D supplements for individuals 60-plus due to the association between low vitamin D and faster cognitive decline.
A Neolithic skeleton from Scotland reveals the earliest case of rickets in the UK, dating back over 3,000 years. The woman's diet and lifestyle suggest she suffered from Vitamin D deficiency due to lack of sunlight, highlighting unusual circumstances that led to her condition.
A global survey found that most adults (72%) believe they have a 'healthy' or 'optimal' diet, despite the high prevalence of diseases associated with dietary deficiencies. The survey also revealed that less than half of respondents consume enough Omega-3s and Vitamin D through food sources alone.
A genetic study found an association between reduced vitamin D levels and increased risk of multiple sclerosis. The study, published in PLOS Medicine, used a Mendelian randomization approach to examine the link between genetically lowered vitamin D levels and susceptibility to multiple sclerosis.
Researchers found that vitamin D supplements improved vitamin D levels and reduced falls in a five-month trial. The study suggests vitamin D may help maintain muscle integrity and strength, reducing the risk of falls in vulnerable populations.
A Mayo Clinic study published in Pediatric Obesity found that excessive vitamin D supplementation in obese teenagers showed no benefits for their heart health or diabetes risk. The study, led by Dr. Seema Kumar, also found increased cholesterol and triglyceride levels in the teens during supplementation.
A randomized clinical trial of high-dose vitamin D supplementation in postmenopausal women found no benefits on bone mineral density, muscle function or falls. The study's results contradict some experts' recommendations for optimal serum vitamin D levels.
Doctors warn that commercial interests are driving the continued recommendation of calcium and vitamin D supplements for osteoporosis treatment, despite a lack of evidence showing their benefit. The authors argue that industry influence is fuelling enthusiasm for these supplements, which are highly profitable.
Researchers found a statistically significant association between higher vitamin D levels and lower non-HDL cholesterol in children aged one to five years. The study suggests that factors leading to cardiovascular disease may start in early childhood, providing an opportunity for early life interventions to reduce risk.
Researchers say that daily intake of more than three times the recommended minimum is needed to restore a healthy blood level of vitamin D in overweight or obese blacks. Higher doses were found to be more effective at suppressing parathyroid hormone and improving bone health.
Researchers found that weight loss in combination with vitamin D supplementation significantly reduced chronic inflammation. The study, which involved over 200 postmenopausal women, showed that those who lost 5-10% of their baseline weight saw a 37% reduction in inflammatory biomarkers compared to the placebo group.
Researchers found that high-dose vitamin D3 supplementation improved vitamin D status and reduced HIV-1 infection in individuals with winter deficiency. The study also showed that vitamin D's impact on the immune system can attenuate HIV-1 replication.
Children with lower vitamin D levels had higher blood markers related to kidney dysfunction and greater kidney function loss over time. Maintaining normal vitamin D levels helps preserve kidney function in children with CKD.
A new clinical trial found that more than 10% of patients still had low levels of vitamin D at discharge, with levels worsening at the one-year follow-up exam. Vitamin D3 supplementation showed promise in addressing deficiency problems and their associated health risks.
A study of 34,157 postmenopausal women found that vitamin D and calcium supplements had no significant impact on menopausal symptoms, including hot flashes and fatigue. The results suggest that these supplements may not be an effective treatment option for relieving menopausal symptoms.
Researchers found that vitamin D levels in hospitalized pet cats predict survival chances, with higher levels linked to better outcomes. The study suggests a potential link between vitamin D and feline health problems, offering new insights for veterinarians.