ABSTRACT
Calcium supplementation and fortification are strategies widely used to prevent adverse outcome in population with low-calcium intake which is highly frequent in low-income settings. We aimed to determine the effectiveness and cost-effectiveness of calcium fortified foods on calcium intake and related health, or economic outcomes. We performed a systematic review and meta-analysis involving participants of any age or gender, drawn from the general population. We searched PubMed, Agricola, EMBASE, CINAHL, Global Health, EconLit, the FAO website and Google until June 2019, without language restrictions. Pair of reviewers independently selected, extracted data and assessed the risk of bias of included studies using Covidence software. Disagreements were resolved by consensus. We performed meta-analyses using RevMan 5.4 and subgroup analyses by study design, age group, and fortification levels. We included 20 studies of which 15 were randomized controlled trials (RCTs), three were non-randomised studies and two were economic evaluations. Most RCTs had high risk of bias on randomization or blinding. Most represented groups were women and children from 1 to 72 months, most common intervention vehicles were milk and bakery products with a fortification levels between 96 and 1200 mg per 100 g of food. Calcium intake increased in the intervention groups between 460 mg (children) and 1200 mg (postmenopausal women). Most marked effects were seen in children. Compared to controls, height increased 0.83 cm (95% CI 0.00; 1.65), plasma parathyroid hormone decreased -1.51 pmol/L, (-2.37; -0.65), urine:calcium creatinine ratio decreased -0.05, (-0.07; -0.03), femoral neck and hip bone mineral density increased 0.02 g/cm2 (0.01; 0.04) and 0.03 g/cm2 (0.00; 0.06), respectively. The largest cost savings (43%) reported from calcium fortification programs came from prevented hip fractures in older women from Germany. Our study highlights that calcium fortification leads to a higher calcium intake, small benefits in children's height and bone health and also important evidence gaps for other outcomes and populations that could be solved with high quality experimental or quasi-experimental studies in relevant groups, especially as some evidence of calcium supplementation show controversial results on the bone health benefit on older adults.
Subject(s)
Calcium, Dietary , Calcium/administration & dosage , Food, Fortified , Aged , Bone Density , Calcium/blood , Calcium/deficiency , Calcium/urine , Child , Child, Preschool , Female , Hip Fractures/prevention & control , Humans , Infant , MaleABSTRACT
CONICET’s Translational Health Research Network is coordinating efforts to advance in translational medicine. Health researchers initiate and focus their research with the aim of improving the health and quality of life of the population. An efficient research system should address health problems relevant to the population resulting in interventions and outcomes important for patients and health professionals. Recommendations to achieve this involve large thematic areas like (a) to set research priorities;(b) to improve research methodology;(c) to make research management and regulation transparent;(d) to increase accessibility to all results;and (e) to improve research dissemination. The recent COVID-19 pandemic has been a clear demonstration of how the country’s research system has united the most diverse disciplines to jointly provide solutions to address it. An active and transparent mechanism to identify priorities in the country and to unite funding and research efforts to provide solutions to those priorities is proposed. Translational health research means the joint work of the most diverse health research disciplines in order to jointly obtain efficient and effective interventions to improve the health and quality of life of the population.
ABSTRACT
La Red de Investigación Traslacional en Salud del CONICET está coordinando esfuerzos para avanzar en la medicina traslacional. Los investigadores en salud comienzan y dirigen sus investigaciones con el objetivo de mejorar la salud y calidad de vida de la población. Un sistema de investigación eficiente debe abordar los problemas de salud de importancia para las poblaciones y las intervenciones y resultados que los pacientes y los profesionales de la salud consideren importantes. Las recomendaciones tienen que ver con grandes grupos temáticos que son (a) explicitar la relevancia de la investigación y, por tanto, sus prioridades (b) mejorar la metodología de investigación (c) transparentar la gestión y regulación de la investigación (d) aumentar la accesibilidad a todos los resultados relevantes, y (e) mejorar la manera en que se difunde la investigación. La reciente pandemia de COVID-19 ha sido una clara demostración de cómo el sistema de investigación del país ha unido las más diversas disciplinas para, en forma conjunta, brindar soluciones para enfrentarla. La reciente experiencia consolida que haya un mecanismo activo y transparente de identificación de prioridades en el país y la unión de esfuerzos de financiamiento y de investigadores en brindar soluciones a dichas prioridades. La investigación traslacional en salud significa el trabajo mancomunado de las más diversas disciplinas de investigación en salud para, en forma conjunta, obtener intervenciones eficaces y efectivas que impacten en la mejoría de la salud y la calidad de vida de la población. CONICET's Translational Health Research Network is coordinating efforts to advance in translational medicine. Health researchers initiate and focus their research with the aim of improving the health and quality of life of the population. An efficient research system should address health problems relevant to the population resulting in interventions and outcomes important for patients and health professionals. Recommendations to achieve this involve large thematic areas like (a) to set research priorities;(b) to improve research methodology;(c) to make research management and regulation transparent;(d) to increase accessibility to all results;and (e) to improve research dissemination. The recent COVID-19 pandemic has been a clear demonstration of how the country's research system has united the most diverse disciplines to jointly provide solutions to address it. An active and transparent mechanism to identify priorities in the country and to unite funding and research efforts to provide solutions to those priorities is proposed. Translational health research means the joint work of the most diverse health research disciplines in order to jointly obtain efficient and effective interventions to improve the health and quality of life of the population.