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1.
Excessive Vitamin A Supplementation Increased the Incidence of Acute Respiratory Tract Infections: A Systematic Review and Meta-Analysis.
Zhang, Y, Lu, Y, Wang, S, Yang, L, Xia, H, Sun, G
Nutrients. 2021;(12)
Abstract
(1) Background: vitamin A deficiency (VAD) is highly prevalent in children living in poor conditions. It has been suggested that vitamin A supplementation (VAS) may reduce the risk of acute respiratory tract infections (ARTI). Our study provides updates on the effects of oral VAS (alone) in children on ARTI and further explores the effect on interesting subgroups. (2) Methods: eight databases were systematically searched from their inception until 5 July 2021. The assessments of inclusion criteria, extraction of data, and data synthesis were carried out independently by two reviewers. (3) Results: a total of 26 randomized trials involving 50,944 participants fulfilled the inclusion criteria. There was no significant association of VAS with the incidence of ARTI compared with the placebo (RR 1.03, 95% CI 0.92 to 1.15). Subgroup analyses showed that VAS higher than WHO recommendations increased the incidence of ARTI by 13% (RR 1.13, 95% CI 1.07 to 1.20), and in the high-dose intervention group, the incidence rate among well-nourished children rose by 66% (RR 1.66, 95% CI 1.30 to 2.11). (4) Conclusions: no more beneficial effects were seen with VAS in children in the prevention or recovery of acute respiratory infections. Excessive VAS may increase the incidence of ARTI in children with normal nutritional status.
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2.
Herbal Medications Used to Ameliorate Cardiac Conditions.
Revell, MA, Pugh, MA
The Nursing clinics of North America. 2021;(1):123-136
Abstract
Herbs have been used for centuries to treat various diseases, including cardiovascular disease. Herbs may be used by clients exclusively for disease management or in combination with conventional medications. This article increases provider awareness of certain herbs and their potential use by clients, as well as their impact on the cardiovascular system. It is important for the advanced practice nurse to collect information related to herb use during history retrieval. This information should prompt the nurse to discuss possible benefits and side effects that may occur taking herbs in isolation or in combination with cardiovascular prescription medications.
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3.
Potential mental and physical benefits of supplementation with a high-dose, B-complex multivitamin/mineral supplement: What is the evidence?
Sarris, J, Mehta, B, Óvári, V, Ferreres Giménez, I
Nutricion hospitalaria. 2021;(6):1277-1286
Abstract
Objective: to perform a systematic literature review to examine the effects of high-dose, B-complex multivitamin/mineral supplementation on physical, mental, and energy outcomes in healthy and 'at-risk' (suboptimal nutritional status/subclinical symptoms at baseline) adult populations. Methods: PubMed was searched for relevant randomized controlled trials until January 2020. Results: overall, 136 publications were identified. In the seven randomised, double-blind, placebo-controlled studies considered eligible for inclusion, supplementation in healthy populations predominantly showed improvements in perceived stress, physical stamina, concentration, and general mental health, and significant reductions in anxiety and improvements in self-reported vigour. However, not all of these outcomes were significant, and statistical correction for multiple outcomes was not commonly employed. Studies investigating brain mapping following supplementation indicated increased functional activity in brain regions related to processing of attention, executive control, and working memory during cognitive tasks. Conclusions: while there is certainly a need for further studies on the neurocognitive and physical benefits of micronutrient supplementation, this review provides generally supportive evidence for the benefits of a high-dose, B-complex multivitamin/mineral supplement in healthy and at-risk populations in terms of physical, mental, and energy outcomes.
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4.
The Use of Lower or Higher Than Recommended Doses of Folic Acid Supplements during Pregnancy Is Associated with Child Attentional Dysfunction at 4-5 Years of Age in the INMA Project.
Compañ Gabucio, LM, García de la Hera, M, Torres Collado, L, Fernández-Somoano, A, Tardón, A, Guxens, M, Vrijheid, M, Rebagliato, M, Murcia, M, Ibarluzea, J, et al
Nutrients. 2021;(2)
Abstract
We assessed the association between the use of lower- and higher-than-recommended doses of folic acid supplements (FAs) during pregnancy and attentional function in boys and girls at age of 4-5. We analyzed data from 1329 mother-child pairs from the mother-child cohort INfancia y Medio Ambiente Project (INMA) study. Information on FAs use during pregnancy was collected in personal interviews at weeks 12 and 30, and categorized in <400, 400-999 (recommended dose), and ≥1000 μg/day. Child attentional function was assessed by Conners' Kiddie Continuous Performance Test. Multivariable regression analyses were used to estimate incidence rate ratios (IRR) and beta coefficients with 95% confidence intervals (CI). Compared to recommended FAs doses, the periconceptional use of <400 and ≥1000 μg/day was associated with higher risk of omission errors-IRR = 1.14 (95% CI: 1.01; 1.29) and IRR = 1.16 (95% CI: 1.02; 1.33), respectively. The use of FAs < 400 μg/day and ≥1000 μg/day was significantly associated with deficits of attentional function only in boys. FAs use < 400 μg/day was associated with higher omission errors with IRR = 1.22 and increased hit reaction time (HRT) β = 34.36, and FAs use ≥ 1000 μg/day was associated with increased HRT β = 33.18 and HRT standard error β = 3.31. The periconceptional use of FAs below or above the recommended doses is associated with deficits of attentional function in children at age of 4-5, particularly in boys.
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5.
Assessment of adverse reactions to α-lipoic acid containing dietary supplements through spontaneous reporting systems.
Gatti, M, Ippoliti, I, Poluzzi, E, Antonazzo, IC, Moro, PA, Moretti, U, Menniti-Ippolito, F, Mazzanti, G, De Ponti, F, Raschi, E
Clinical nutrition (Edinburgh, Scotland). 2021;(3):1176-1185
Abstract
BACKGROUND & AIMS Alpha-lipoic acid (ALA)-containing dietary supplements are widely used in clinical practice, although their safety assessment is under-investigated. We characterize the safety profile of ALA-containing products by analysing spontaneous reports of suspected adverse reactions (ARs). METHODS Suspected ARs to ALA-containing products were extracted from the Italian Phytovigilance System (IPS), and scrutinized in terms of seriousness and causality (through WHO UMC system), with a specific focus on important (IMEs) and designated medical events (DMEs). To characterize the reporting profile from an international perspective, the WHO-VigiBase was also queried. RESULTS From March 2002 to February 2020, out of 2147 total reports, 116 reports concerning 212 ARs to ALA-containing products were collected. Women were involved in 68.1% of cases. Skin (44.9%) and gastrointestinal disorders (10.8%) were the most frequently represented ARs. Causality assessment resulted as definite (15), probable (35), possible (24), unlikely (5), and unclassifiable (37). In 70% of cases, events occurred within 30 days of ALA use. Forty-five reports were serious (38.8%), being insulin autoimmune syndrome the most frequently reported (N = 10). IMEs were recorded in 20 cases, including four DMEs (3 angioedema and one anaphylactic shock). Similar distribution emerged from the 5641 reports in the WHO-VigiBase. CONCLUSIONS The remarkable reporting of unpredictable skin, immune and hepatic ARs, coupled with seriousness, strong causality and early onset, calls for a) careful risk-benefit assessment of ALA-containing products by regulators; b) awareness and monitoring by clinicians and c) continuous vigilance of their safety profile through valuable spontaneous reporting systems such as IPS.
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6.
Effects of Curcumin Supplementation on Inflammatory Markers, Muscle Damage, and Sports Performance during Acute Physical Exercise in Sedentary Individuals.
Dias, KA, da Conceição, AR, Oliveira, LA, Pereira, SMS, Paes, SDS, Monte, LF, Sarandy, MM, Novaes, RD, Gonçalves, RV, Della Lucia, CM
Oxidative medicine and cellular longevity. 2021;:9264639
Abstract
Exhaustive and acute unusual physical exercise leads to muscle damage. Curcumin has been widely studied due to the variety of its biological activities, attributed to its antioxidant and anti-inflammatory properties. Furthermore, it has shown positive effects on physical exercise practitioners. However, there is no literature consensus on the beneficial effects of curcumin in acute physical activities performed by sedentary individuals. Therefore, we systematically reviewed evidence from clinical trials on the main effects of curcumin supplementation on inflammatory markers, sports performance, and muscle damage during acute physical exercises in these individuals. We searched PubMed/MEDLINE, Scopus, Web of Science, and Embase databases, and only original studies were analyzed according to the PRISMA guidelines. The included studies were limited to supplementation of curcumin during acute exercise. A total of 5 studies were selected. Methodological quality assessments were examined using the SYRCLE's risk-of-bias tool. Most studies have shown positive effects of curcumin supplementation in sedentary individuals undergoing acute physical exercise. Overall, participants supplemented with curcumin showed less muscle damage, reduced inflammation, and better muscle performance. The studies showed heterogeneous data and exhibited methodological limitations; therefore, further research is necessary to ensure curcumin supplementation benefits during acute and high-intensity physical exercises. Additionally, mechanistic and highly controlled studies are required to improve the quality of the evidence and to elucidate other possible mechanisms. This study is registered with Prospero number CRD42021262718.
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7.
Effects of saffron (Crocus sativus L.) supplementation on inflammatory biomarkers: A systematic review and meta-analysis.
Asbaghi, O, Sadeghian, M, Sadeghi, O, Rigi, S, Tan, SC, Shokri, A, Mousavi, SM
Phytotherapy research : PTR. 2021;(1):20-32
Abstract
The effect of saffron supplementation on subclinical inflammation remains inconclusive. We performed a systematic review and meta-analysis to summarize available findings on the effect of saffron supplementation on inflammatory biomarkers (C-reactive protein [CRP], tumor necrosis factor-α [TNF-α], and interleukin-6 [IL-6]) in adults. We searched PubMed/Medline, Scopus, Web of Science, and Google Scholar databases up to November 2019 using relevant keywords to identify eligible trials. All randomized controlled trials (RCTs) that examined the effect of oral saffron supplementation on plasma concentrations of CRP, TNF-α, and IL-6 were included. For each outcome, mean differences and SDs were pooled using a random-effects model. Overall, eight RCTs were included in this meta-analysis. The pooled results showed that saffron supplementation did not result in significant changes in serum CRP (weighted mean difference [WMD]: -0.43 mg/L; 95% confidence interval [CI]: -1.04 to 0.17; p = .16), serum TNF-α (WMD: -1.29 pg/mL; 95% CI: -4.13 to 1.55; p = .37), and IL-6 concentrations (WMD: 0.11 pg/mL; 95% CI: -0.79 to 1.00; p = .81). Subgroup analysis indicated a significant reduction in serum CRP levels in studies with baseline CRP of ≥3 mg/L, saffron dosage of ≤30 mg/day, and intervention duration of <12 weeks, as well as trials that used crocin. Similarly, saffron was found to decrease TNF-α in studies that recruited non-diabetic subjects, subjects with baseline levels of ≥15 pg/mL, and participants with <50 years old, as well as trials that administered saffron at the dosage of ≤30 mg/day. We also found a significant non-linear effect of saffron dosage on serum CRP concentrations (pnon-linearity = .03). The overall results indicated that saffron supplementation did not affect inflammatory cytokines. Further high-quality studies are needed to firmly establish the clinical efficacy of supplemental saffron on inflammatory biomarkers.
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8.
A Randomized, Double-Blind, Placebo-Controlled Study of a Nutraceutical Supplement for Promoting Hair Growth in Perimenopausal, Menopausal, and Postmenopausal Women With Thinning Hair.
Ablon, G, Kogan, S
Journal of drugs in dermatology : JDD. 2021;(1):55-61
Abstract
Hair loss is a complex and multi-factorial problem that is associated with significant psychological morbidity in women. Menopausal women represent a significant percentage of those affected, since the menopausal hormonal transition can be a contributing factor. A novel nutraceutical supplement has been specifically formulated with phytoactives to improve hair growth and quality in menopausal women (Nutrafol® Women’s Balance Capsules). The objective of this 6-month, randomized, double-blind, placebo-controlled study was to assess the safety and efficacy of this oral supplement to promote hair growth in perimenopausal, menopausal, and postmenopausal women with self-perceived thinning. Subjects were randomized to the study supplement (n=40) or placebo (n=30). The primary endpoint was a statistically significant increase in the number of terminal and vellus hairs based on phototrichogram analysis. Daily intake of the nutraceutical supplement resulted in progressive and significant increase in terminal and total hair counts on days 90 (P<0.01) and 180 (P<0.01) compared to placebo. The vellus hair counts significantly increased for the active treatment group (P<0.05) by day 180 while significantly decreasing for the placebo group subjects. Hair shedding progressively and significantly decreased for the active group compared to placebo, culminating in a reduction of 32.41% by day 180 (P<0.01). The study supplement was well-tolerated. ClinicalTrials.gov Identifier: NCT04048031 J Drugs Dermatol. 2021;20(1):55-61. doi:10.36849/JDD.5701 THIS ARTICLE HAD BEEN MADE AVAILABLE FREE OF CHARGE. PLEASE SCROLL DOWN TO ACCESS THE FULL TEXT OF THIS ARTICLE WITHOUT LOGGING IN. NO PURCHASE NECESSARY. PLEASE CONTACT THE PUBLISHER WITH ANY QUESTIONS.
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9.
Efficacy and safety of spore-forming probiotics in the treatment of functional dyspepsia: a pilot randomised, double-blind, placebo-controlled trial.
Wauters, L, Slaets, H, De Paepe, K, Ceulemans, M, Wetzels, S, Geboers, K, Toth, J, Thys, W, Dybajlo, R, Walgraeve, D, et al
The lancet. Gastroenterology & hepatology. 2021;(10):784-792
Abstract
BACKGROUND Current treatments for functional dyspepsia have limited efficacy or present safety issues. We aimed to assess spore-forming probiotics in functional dyspepsia as monotherapy or add-on therapy to long-term treatment with proton-pump inhibitors. METHODS In this single-centre, randomised, double-blind, placebo-controlled pilot trial that took place at University Hospitals Leuven (Leuven, Belgium), adult patients (≥18 years) with functional dyspepsia (as defined by Rome IV criteria, on proton-pump inhibitors or off proton-pump inhibitors) were randomly assigned (1:1) via computer-generated blocked lists, stratified by proton-pump inhibitor status, to receive 8 weeks of treatment with probiotics (Bacillus coagulans MY01 and Bacillus subtilis MY02, 2·5 × 109 colony-forming units per capsule) or placebo consumed twice per day, followed by an open-label extension phase of 8 weeks. Individuals with a history of abdominal surgery, diabetes, coeliac or inflammatory bowel disease, active psychiatric conditions, and use of immunosuppressant drugs, antibiotics, or probiotics in the past 3 months were excluded. All patients and on-site study personnel were masked to treatment allocation in the first 8 weeks. Symptoms, immune activation, and faecal microbiota were assessed and recorded. The primary endpoint was a decrease of at least 0·7 in the postprandial distress syndrome (PDS) score of the Leuven Postprandial Distress Scale in patients with a baseline PDS score of 1 or greater (at least mild symptoms), assessed in the intention-to-treat population. This study is registered with ClinicalTrials.gov, NCT04030780. FINDINGS Between June 3, 2019, and March 11, 2020, of 93 individuals assessed for eligibility, we included 68 patients with functional dyspepsia (51 [75%] women, mean age 40·1 years [SD 14·4], 34 [50%] on proton-pump inhibitors). We randomly assigned 32 participants to probiotics and 36 to placebo. The proportion of clinical responders was higher with probiotics (12 [48%] of 25) than placebo (six [20%] of 30; relative risk 1·95 [95% CI 1·07-4·11]; p=0·028). The number of patients with adverse events was similar with probiotics (five [16%] of 32) and placebo (12 [33%] of 36). Two serious adverse events occurring during the open-label phase (appendicitis and syncope in two separate patients) were assessed as unlikely to be related to the study product. INTERPRETATION In this exploratory study, B coagulans MY01 and B subtilis MY02 were efficacious and safe in the treatment of functional dyspepsia. Participants had potentially beneficial immune and microbial changes, which could provide insights into possible underlying mechanisms as future predictors or treatment targets. FUNDING MY HEALTH.
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10.
Vitamins B-12 and C Supplementation Improves Arterial Reactivity and Structure in Passive Smokers: Implication in Prevention of Smoking-Related Atherosclerosis.
Woo, KS, Yip, TWC, Chook, P, Koon, KV, Leong, HC, Feng, XH, Lee, APW, Kwok, TCY
The journal of nutrition, health & aging. 2021;(2):248-254
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Abstract
BACKGROUND Atherosclerosis is an important medical problem of modern society. High environmental tobacco smoke in casino is associated with an accelerated atherogenic process. We have previously shown vitamin B12 and C supplementation improves vascular reactivity and may be beneficial in vascular protection. OBJECTIVE To evaluate the impact of vitamin supplementation on atherosclerosis (brachial artery reactivity FMD and carotid intima-media thickness IMT) in subjects exposed to high environmental tobacco smoke. DESIGN Double-blind 2x2 factorial design fashion. SETTING Computer randomization in 4 treatment groups: placebo (n=24), vitamin B12 (n=21), vitamin C (n=23) and vitamin B12+C (n=23) groups. PARTICIPANTS 91 passive-smoking casino employees (19.2% male, mean age 45.0±8.2 years). INTERVENTION Subjects were randomized to receive vitamin B12 (500µg daily), vitamin C (200mg daily), vitamin B12+C or image-matched placebo capsules for 1 year. MEASUREMENT Brachial FMD and carotid IMT (surrogate atherosclerotic markers) were measured by ultrasound at baseline and on completion at 12 months. METHODS 91 passive smoking casino employees (19.2% male, mean age 45.0±8.2 years) were randomized to receive vitamin B12 (500µg daily), vitamin C (200mg daily), vitamin B12+C or image-matched placebo capsules in double-blind 2 x 2 factorial design fashion for 1 year. Brachial FMD and carotid IMT (surrogate atherosclerotic markers) were measured by ultrasound at baseline and 12 months. RESULTS Of the 78 (85.7%) passive-smoking employees completed the study, 11.5% had hypertension, 5.1% diabetes mellitus and 15.4% hypercholesterolemia. There were no significant changes in their blood pressures, lipid profiles, glucose and body mass index after supplementation for 1 year, but mild decrease in DBP (p<0.001) and blood creatinine (p<0.01) after combined vitamin B12 and C, and significant increase in blood B12 after vitamin B12 (p<0.01) and vitamin B12+C supplementations (p<0.001). Brachial FMD and cartotid IMT improved after the 3 vitamin supplementations (p<0.001), but not after placebo, being more significant after combined vitamin supplementations (p<0.0001). No adverse effects were reported. CONCLUSION Vitamin B12 or C supplementation in passive smokers improved vascular reactivity and structures at 1 year, with implication in long term atherosclerosis prevention.