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Vitamin B12 Supplementation

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61. Vitamin B12 and cognitive function: an evidence-based analysis

analysis. Toronto: Health Quality Ontario (HQO). Ontario Health Technology Assessment Series (OHTAS) 13(23). 2013 Authors' conclusions - Based on very low quality evidence, there does appear to be an association between elevated plasma homocysteine levels (a by-product of B vitamins) and the onset of dementia. - Based on moderate quality evidence, but with less than optimal duration of follow-up, treatment with B12 supplementation does not appreciably change cognitive function. - Based on low (...) to moderate quality of evidence, treatment with vitamin B12 and folate in patients with mild cognitive impairment seems to slow the rate of brain atrophy. - Based on moderate quality evidence, oral vitamin B12 is as effective as parenteral vitamin B12 in patients with confirmed B12 deficiency. Final publication URL Indexing Status Subject indexing assigned by CRD MeSH Cognition; Dementia; Dietary Supplements; Humans; Vitamin B 12; Vitamin B 12 Deficiency Language Published English Country of organisation

2014 Health Technology Assessment (HTA) Database.

62. Effect of Monthly High-Dose Vitamin D Supplementation on Cardiovascular Disease in the Vitamin D Assessment Study : A Randomized Clinical Trial. Full Text available with Trip Pro

Effect of Monthly High-Dose Vitamin D Supplementation on Cardiovascular Disease in the Vitamin D Assessment Study : A Randomized Clinical Trial. Cohort studies have reported increased incidence of cardiovascular disease (CVD) among individuals with low vitamin D status. To date, randomized clinical trials of vitamin D supplementation have not found an effect, possibly because of using too low a dose of vitamin D.To examine whether monthly high-dose vitamin D supplementation prevents CVD (...) sample of 438 participants, the mean follow-up 25(OH)D level was greater than 20 ng/mL higher in the vitamin D group than in the placebo group. The primary outcome of CVD occurred in 303 participants (11.8%) in the vitamin D group and 293 participants (11.5%) in the placebo group, yielding an adjusted hazard ratio of 1.02 (95% CI, 0.87-1.20). Similar results were seen for participants with baseline vitamin D deficiency and for secondary outcomes.Monthly high-dose vitamin D supplementation does

2017 JAMA cardiology Controlled trial quality: predicted high

63. Effect of High-Dose Vitamin D Supplementation on Volumetric Bone Density and Bone Strength: A Randomized Clinical Trial. Full Text available with Trip Pro

Effect of High-Dose Vitamin D Supplementation on Volumetric Bone Density and Bone Strength: A Randomized Clinical Trial. Few studies have assessed the effects of daily vitamin D doses at or above the tolerable upper intake level for 12 months or greater, yet 3% of US adults report vitamin D intakes of at least 4000 IU per day.To assess the dose-dependent effect of vitamin D supplementation on volumetric bone mineral density (BMD) and strength.Three-year, double-blind, randomized clinical trial (...) conducted in a single center in Calgary, Canada, from August 2013 to December 2017, including 311 community-dwelling healthy adults without osteoporosis, aged 55 to 70 years, with baseline levels of 25-hydroxyvitamin D (25[OH]D) of 30 to 125 nmol/L.Daily doses of vitamin D3 for 3 years at 400 IU (n = 109), 4000 IU (n = 100), or 10 000 IU (n = 102). Calcium supplementation was provided to participants with dietary intake of less than 1200 mg per day.Co-primary outcomes were total volumetric BMD at radius

2019 JAMA Controlled trial quality: predicted high

64. Effects of vitamin D supplementation on cognitive function and blood Abeta-related biomarkers in older adults with Alzheimer`s disease: a randomised, double-blind, placebo-controlled trial (Abstract)

Effects of vitamin D supplementation on cognitive function and blood Abeta-related biomarkers in older adults with Alzheimer`s disease: a randomised, double-blind, placebo-controlled trial Our study aimed to assess the effect of a 12-month vitamin D supplementation on cognitive function and amyloid beta (Aβ)-related biomarkers in subjects with Alzheimer's disease (AD). METHODS : This was a randomised, double-blind, placebo-controlled trial. 210 AD patients were randomly divided (...) the control group. According to mixed-model analysis, vitamin D group had significant increase in full scale IQ during follow-up period (p<0.001).Daily oral vitamin D supplementation (800 IU/day) for 12 months may improve cognitive function and decrease Aβ-related biomarkers in elderly patients with AD. Larger scale longer term randomised trials of vitamin D are needed.ChiCTR-IIR-16009549.© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.

2019 EvidenceUpdates

65. Effects of <i>Helicobacter pylori</i> treatment and vitamin and garlic supplementation on gastric cancer incidence and mortality: follow-up of a randomized intervention trial. Full Text available with Trip Pro

Effects of Helicobacter pylori treatment and vitamin and garlic supplementation on gastric cancer incidence and mortality: follow-up of a randomized intervention trial. To assess the effects of Helicobacter pylori treatment, vitamin supplementation, and garlic supplementation in the prevention of gastric cancer.Blinded randomized placebo controlled trial.Linqu County, Shandong province, China.3365 residents of a high risk region for gastric cancer. 2258 participants seropositive (...) for antibodies to H pylori were randomly assigned to H pylori treatment, vitamin supplementation, garlic supplementation, or their placebos in a 2×2×2 factorial design, and 1107 H pylori seronegative participants were randomly assigned to vitamin supplementation, garlic supplementation, or their placebos in a 2×2 factorial design.H pylori treatment with amoxicillin and omeprazole for two weeks; vitamin (C, E, and selenium) and garlic (extract and oil) supplementation for 7.3 years (1995-2003).Primary

2019 BMJ

66. High-Dose Vitamin D Supplementation Does Not Prevent Allergic Sensitization of Infants Full Text available with Trip Pro

High-Dose Vitamin D Supplementation Does Not Prevent Allergic Sensitization of Infants To investigate the effect of vitamin D supplementation dose on allergic sensitization and allergic diseases in infants, and to evaluate whether vitamin D status in pregnancy and at birth are associated with infant allergy outcomes.Altogether, 975 infants participated in a randomized, controlled trial of daily vitamin D supplementation of 10 μg (400 IU) or 30 μg (1200 IU) from the age of 2 weeks. At 12 months (...) of age, food and aeroallergen IgE antibodies were measured, and the occurrence of allergic diseases and wheezing were evaluated.We found no differences between the vitamin D supplementation groups in food (OR, 0.98; 95% CI, 0.66-1.46) or aeroallergen sensitization at 12 months (OR, 0.76; 95% CI,0.34-1.71). Allergic diseases or wheezing did not differ between groups, except for milk allergy which occurred more often in infants administered 30 μg vitamin D compared with the 10 μg dose (OR, 2.23; 95% CI

2019 EvidenceUpdates

67. Effect of High-Dose vs Standard-Dose Vitamin D3 Supplementation on Progression-Free Survival Among Patients With Advanced or Metastatic Colorectal Cancer: The SUNSHINE Randomized Clinical Trial Full Text available with Trip Pro

Effect of High-Dose vs Standard-Dose Vitamin D3 Supplementation on Progression-Free Survival Among Patients With Advanced or Metastatic Colorectal Cancer: The SUNSHINE Randomized Clinical Trial In observational studies, higher plasma 25-hydroxyvitamin D (25[OH]D) levels have been associated with improved survival in metastatic colorectal cancer (CRC).To determine if high-dose vitamin D3 added to standard chemotherapy improves outcomes in patients with metastatic CRC.Double-blind phase 2 (...) randomized clinical trial of 139 patients with advanced or metastatic CRC conducted at 11 US academic and community cancer centers from March 2012 through November 2016 (database lock: September 2018).mFOLFOX6 plus bevacizumab chemotherapy every 2 weeks and either high-dose vitamin D3 (n = 69) or standard-dose vitamin D3 (n = 70) daily until disease progression, intolerable toxicity, or withdrawal of consent.The primary end point was progression-free survival (PFS) assessed by the log-rank test

2019 EvidenceUpdates

68. High-Dose Vitamin D Supplementation During Pregnancy and Asthma in Offspring at the Age of 6 Years. Full Text available with Trip Pro

High-Dose Vitamin D Supplementation During Pregnancy and Asthma in Offspring at the Age of 6 Years. 30860552 2019 03 25 2019 09 12 1538-3598 321 10 2019 03 12 JAMA JAMA High-Dose Vitamin D Supplementation During Pregnancy and Asthma in Offspring at the Age of 6 Years. 1003-1005 10.1001/jama.2019.0052 Brustad Nicklas N Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte University Hospital, Copenhagen, Denmark. Eliasen Anders U AU Copenhagen Prospective Studies on Asthma (...) Prospective Studies on Asthma in Childhood, Herlev and Gentofte University Hospital, Copenhagen, Denmark. eng Journal Article Randomized Controlled Trial United States JAMA 7501160 0098-7484 0 Vitamins 1406-16-2 Vitamin D AIM IM Asthma diagnosis epidemiology prevention & control Child Child, Preschool Dietary Supplements Dose-Response Relationship, Drug Female Follow-Up Studies Humans Male Pregnancy Prevalence Regression Analysis Respiratory Function Tests Respiratory Sounds Vitamin D administration

2019 JAMA Controlled trial quality: uncertain

69. Association of High-Dose Vitamin D Supplementation During Pregnancy With the Risk of Enamel Defects in Offspring: A 6-Year Follow-up of a Randomized Clinical Trial (Abstract)

Association of High-Dose Vitamin D Supplementation During Pregnancy With the Risk of Enamel Defects in Offspring: A 6-Year Follow-up of a Randomized Clinical Trial Enamel defects of developmental origin affect up to 38% of schoolchildren and is recognized as a global public health challenge. The impaired enamel formation results in pain owing to hypersensitivity, posteruptive breakdowns, rapid caries progression, and extractions in some cases. The etiology is unknown; therefore, prevention (...) is currently not possible.To assess the association of a high-dose vitamin D supplementation in pregnant women with enamel defects and caries in their offspring.Post hoc analysis of a double-blind, single-center, randomized clinical trial, the Copenhagen Prospective Studies on Asthma in Childhood 2010 cohort (COPSAC2010). Enrollment began March 2009 and included 623 women recruited at 24 weeks of pregnancy and 588 of their children. A dental examination was completed at age 6 years in 496 of 588 children

2019 EvidenceUpdates

70. Vitamin K supplementation for cystic fibrosis. Full Text available with Trip Pro

Vitamin K supplementation for cystic fibrosis. Cystic fibrosis is a genetic disorder which can lead to multiorgan dysfunction. Malabsorption of fat and fat-soluble vitamins (A, D, E, K) may occur and can cause subclinical deficiencies of some of these vitamins. Vitamin K is known to play an important role in both blood coagulation and bone formation. Supplementation with vitamin K appears to be one way of addressing the deficiency, but there is very limited agreement on the appropriate dose (...) and frequency of use of these supplements.To assess the effects of vitamin K supplementation in people with cystic fibrosis and to determine the optimal dose and route of administration of vitamin K for both routine and therapeutic use.We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Most recent search: 08

2015 Cochrane

71. Vitamin D Supplementation and Prevention of Type 2 Diabetes. Full Text available with Trip Pro

Vitamin D Supplementation and Prevention of Type 2 Diabetes. Observational studies support an association between a low blood 25-hydroxyvitamin D level and the risk of type 2 diabetes. However, whether vitamin D supplementation lowers the risk of diabetes is unknown.We randomly assigned adults who met at least two of three glycemic criteria for prediabetes (fasting plasma glucose level, 100 to 125 mg per deciliter; plasma glucose level 2 hours after a 75-g oral glucose load, 140 to 199 mg per (...) was 0.88 (0.95% confidence interval, 0.75 to 1.04; P = 0.12). The incidence of adverse events did not differ significantly between the two groups.Among persons at high risk for type 2 diabetes not selected for vitamin D insufficiency, vitamin D3 supplementation at a dose of 4000 IU per day did not result in a significantly lower risk of diabetes than placebo. (Funded by the National Institute of Diabetes and Digestive and Kidney Diseases and others; D2d ClinicalTrials.gov number, NCT01942694

2019 NEJM Controlled trial quality: predicted high

72. Effect of Vitamin D Supplementation on Relapse-Free Survival Among Patients With Digestive Tract Cancers: The AMATERASU Randomized Clinical Trial. Full Text available with Trip Pro

Effect of Vitamin D Supplementation on Relapse-Free Survival Among Patients With Digestive Tract Cancers: The AMATERASU Randomized Clinical Trial. Randomized clinical trials of vitamin D supplementation for secondary prevention in patients with cancer are needed, given positive results of observational studies.To determine whether postoperative vitamin D3 supplementation can improve survival of patients with digestive tract cancers overall and in subgroups stratified by 25-hydroxyvitamin D (25 (...) [OH]D) levels.The AMATERASU trial, a randomized, double-blind, placebo-controlled trial conducted at a single university hospital in Japan. Enrollment began in January 2010 and follow-up was completed in February 2018. Patients aged 30 to 90 years with cancers of the digestive tract from the esophagus to the rectum, stages I to III, were recruited. Of 439 eligible patients, 15 declined and 7 were excluded after operation.Patients were randomized to receive oral supplemental capsules of vitamin D

2019 JAMA Controlled trial quality: predicted high

73. Effect of Vitamin D and Omega-3 Fatty Acid Supplementation on Kidney Function in Patients With Type 2 Diabetes: A Randomized Clinical Trial. Full Text available with Trip Pro

Effect of Vitamin D and Omega-3 Fatty Acid Supplementation on Kidney Function in Patients With Type 2 Diabetes: A Randomized Clinical Trial. Chronic kidney disease (CKD) is a common complication of type 2 diabetes that can lead to end-stage kidney disease and is associated with high cardiovascular risk. Few treatments are available to prevent CKD in type 2 diabetes.To test whether supplementation with vitamin D3 or omega-3 fatty acids prevents development or progression of CKD in type 2 (...)  = 26 receiving placebo) and gastrointestinal bleeding among 45 (n = 28 receiving omega-3 fatty acids and n = 17 receiving placebo).Among adults with type 2 diabetes, supplementation with vitamin D3 or omega-3 fatty acids, compared with placebo, resulted in no significant difference in change in eGFR at 5 years. The findings do not support the use of vitamin D or omega-3 fatty acid supplementation for preserving kidney function in patients with type 2 diabetes.ClinicalTrials.gov Identifier

2019 JAMA

74. Preoperative Vitamin B12 and Folic Acid on POCD in Elderly Non-cardiac Surgical Patients

than 65 years old eligible for non-cardiac surgery. Patients who participate will take either vitamin B12 and folic acid supplementation or placebo for 7 days before surgery. Neuropsychological test battery (NPB) will be tested before intervention and at discharge for determination of Post operative cognitive dysfunction (POCD). Another group of non-surgical elderly participants will also be tested for NPB to account for learning effect in POCD diagnosis. The hypothesis is that preoperative vitamin (...) B12 supplementation will reduce the incidence of POCD in elderly patients undergoing non-cardiac surgery. Condition or disease Intervention/treatment Phase Post Operative Cognitive Dysfunction Drug: methylcobalamin Drug: Folic Acid Other: Placebo for methylcobalamin Other: Placebo for folic acid Procedure: non-cardiac surgery Behavioral: NPB test Not Applicable Detailed Description: Vitamin B12 has long been suggested to have neural nutrient effect and widely used in clinical settings for patients

2018 Clinical Trials

75. Diagnostic value of oral “beefy red” patch in vitamin B12 deficiency Full Text available with Trip Pro

Diagnostic value of oral “beefy red” patch in vitamin B12 deficiency Vitamin B12 deficiency, which may cause serious neuropsychiatric damage, is common in the elderly. The non-specific clinical features of B12 deficiency and unreliable serum parameters make diagnosis difficult. We aimed to evaluate the value of oral "beefy red" patches as a clinical marker of B12 deficiency.A diagnostic study was conducted in patients complaining of oral soreness, burning sensation, or severe recurrent oral (...) ulcers. Patients underwent clinical examination and laboratory investigations, including complete blood count and estimation of serum B12, folate, iron, and ferritin levels. Resolution of clinical signs and symptoms after 1 month of B12 supplement was regarded as the diagnostic gold standard.Of 136 patients, 70 had B12 deficiency. Among these patients, the oral "beefy red" patch was observed in 61, abnormal mean corpuscular volume (MCV) was noted in 30, and serum cobalamin levels <200 and <350 pg/mL

2018 Therapeutics and clinical risk management

76. Bioavailability of Vitamin B12 from Dairy Products Using a Pig Model Full Text available with Trip Pro

Bioavailability of Vitamin B12 from Dairy Products Using a Pig Model The present study compares the bioavailability of vitamin B12 (B12) of dairy products or synthetic B12, using the pig as an experimental model for humans. Eleven pigs were used in a cross-over design to assess the net portal drained viscera (PDV) flux of blood plasma B12 after ingestion of tofu (TF; devoid of B12), Swiss cheese (SC), Cheddar cheese (CC), yogurt (YG), and synthetic B12 (TB12; TF supplemented with cyanocobalamin (...) ), providing a total of 25 µg of B12 each. PDV blood plasma flow for SC and CC were higher than for TF and TB12 (p ≤ 0.04) whereas YG was higher than TF (p = 0.05). Porto-arterial difference of blood plasma B12 concentrations were higher for CC and TB12 than for TF and YG (p ≤ 0.04) but not different from SC (p ≥ 0.15). Net PDV flux of B12 was only different from zero for CC. However, the net PDV flux of B12 for CC was not different from SC or TB12. Cumulative net PDV flux of B12 for SC, TB12, and CC were

2018 Nutrients

77. Suboptimal Baseline Serum Vitamin B12 Is Associated With Cognitive Decline in People With Alzheimer’s Disease Undergoing Cholinesterase Inhibitor Treatment Full Text available with Trip Pro

Suboptimal Baseline Serum Vitamin B12 Is Associated With Cognitive Decline in People With Alzheimer’s Disease Undergoing Cholinesterase Inhibitor Treatment Cholinesterase inhibitors (ChEIs) are the mainstream treatment for delaying cognitive decline in Alzheimer's disease (AD). Low vitamin B12 is associated with cognitive dysfunction, and its supplementation has been applied as the treatment for certain types of reversible dementia. The present study hypothesized that baseline serum vitamin (...) B12 is associated with the deterioration of cognitive function in people with AD undergoing ChEI treatment.Between 2009 and 2016, medical records from 165 Taiwanese with mild to moderate AD who underwent ChEI treatment for at least 2 years were reviewed. Their baseline serum vitamin B12 levels were measured before treatment initiation. Their cognitive function was assessed using the Mini-Mental State Examination (MMSE) and Cognitive Abilities Screening Instrument (CASI). Student's t test

2018 Frontiers in neurology

78. Human Intrinsic Factor Expression for Bioavailable Vitamin B12 Enrichment in Microalgae Full Text available with Trip Pro

Human Intrinsic Factor Expression for Bioavailable Vitamin B12 Enrichment in Microalgae Dietary supplements and functional foods are becoming increasingly popular complements to regular diets. A recurring ingredient is the essential cofactor vitamin B12 (B12). Microalgae are making their way into the dietary supplement and functional food market but do not produce B12, and their B12 content is very variable. In this study, the suitability of using the human B12-binding protein intrinsic factor (...) (IF) to enrich bioavailable B12 using microalgae was tested. The IF protein was successfully expressed from the nuclear genome of the model microalga Chlamydomonasreinhardtii and the addition of an N-terminal ARS2 signal peptide resulted in efficient IF secretion to the medium. Co-abundance of B12 and the secreted IF suggests the algal produced IF protein is functional and B12-binding. Utilizing IF expression could be an efficient tool to generate B12-enriched microalgae in a controlled manner

2018 Biology

79. Correlation between serum vitamin B12 level and peripheral neuropathy in atrophic gastritis Full Text available with Trip Pro

nerve conduction velocity in the tibial nerve (R = 0.463). After vitamin B12 supplementation, patients with peripheral neuropathy improved.Serum vitamin B12 levels in patients with chronic gastritis significantly decreased, and the occurrence of peripheral neuropathy had a certain correlation. CAG and H. pylori infection are risk factors for vitamin B12 deficiency and peripheral neuropathy. When treating CAG, vitamin B12 supplementation can significantly reduce peripheral nervous system lesions (...) . Therefore, the occurrence of peripheral neuropathy associated with vitamin B12 deficiency may be considered in patients with CAG. Furthermore, the timely supplementation of vitamin B12 during the clinical treatment of CAG can reduce or prevent peripheral nervous system lesions.

2018 World Journal of Gastroenterology

80. Dietary sources and intakes of folates and vitamin B12 in the Spanish population: Findings from the ANIBES study. Full Text available with Trip Pro

Dietary sources and intakes of folates and vitamin B12 in the Spanish population: Findings from the ANIBES study. Folates and vitamin B12 are key nutrients in one-carbon metabolism and related diseases. Updated and plausible information on population intakes and their major dietary sources is scarce and urgently needed in Spain in order to increase the knowledge that can lead as previous step to prevention by fortification and supplementation policies.The present study aims to evaluate main (...) dietary folate and vitamin B12 sources and intakes in the Spanish population.Results were derived from the ANIBES cross-sectional study using a nationally representative sample of the Spanish population (9-75 years, n = 2,009).Food groups with the highest mean proportional contribution to total folate intakes in both males and females were vegetables (21.7-24.9%) and cereals (10.7-11.2%), while meat and meat products (26.4%) and milk and dairy products (27.3%) were for B12. Total median folate and B12

2017 PLoS ONE

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