Micronutrients Ppt Download

<div>Micronutrients, often referred to as vitamins and minerals, are vital to healthy development, disease prevention, and wellbeing. With the exception of vitamin D, micronutrients are not produced in the body and must be derived from the diet1.</div><div></div><div></div><div>Though people only need small amounts of micronutrients, consuming the recommended amount is important. Micronutrient deficiencies can have devastating consequences. At least half of children worldwide younger than 5 years of age suffer from vitamin and mineral deficiencies2. The World Health Organization recommends multiple types of interventions to address nutrition deficienciesexternal icon3.</div><div></div><div></div><div></div><div>micronutrients ppt download</div><div></div><div>Download File &#9658;&#9658;&#9658;&#9658;&#9658; https://t.co/Z8OpKJ4lVM</div><div></div><div></div><div></div><div></div><div></div><div></div><div>In varying amounts supplied through the diet, micronutrients include such compounds as vitamins and dietary minerals.[3][6] For human nutrition, micronutrient requirements are in amounts generally less than 100 milligrams per day, whereas macronutrients are required in gram quantities daily.[6] A multiple micronutrient powder of at least iron, zinc, and vitamin A was added to the World Health Organization's List of Essential Medicines in 2019.[7] Deficiencies in micronutrient intake commonly result in malnutrition.[3][8]</div><div></div><div></div><div>Inadequate intake of essential nutrients predisposes humans to various chronic diseases, with some 50% of American adults having one or more preventable disease.[3] In the United States, foods poor in micronutrient content and high in food energy make up some 27% of daily calorie intake.[3] One US national survey (National Health and Nutrition Examination Survey 2003-2006) found that with high sugar intake consumed fewer micronutrients, especially vitamins A, C, and E, and magnesium.[3]</div><div></div><div></div><div>Background:  Micronutrient deficiencies have been associated with significantly high reproductive risks, ranging from infertility to fetal structural defects and long-term diseases. In this review we focus on the reproductive risks related to some micronutrients during the periconceptional period, a critical step in determining fetal development and health due to the potential onset of several disorders.</div><div></div><div></div><div>Conclusion:  Although human studies are scarce, and conclusive evidence is provided solely for periconceptional folate and prevention of neural tube defects (NTDs), the overall data indicate that micronutrients may affects fertility, embryogenesis and placentation, and the prophylactic use of some micronutrients may be useful in preventing several adverse pregnancy outcomes. Efforts to increase awareness of a healthy diet should be strengthened not only throughout pregnancy but also before. However, further researches in humans are necessary to optimise periconceptional micronutrient requirements.</div><div></div><div></div><div>Introduction:  Anorexia nervosa (AN) is a complex psychiatric disorder, which can lead to specific somatic complications. Undernutrition is a major diagnostic criteria of AN and it can be associated with several micronutrients deficiencies.</div><div></div><div></div><div>Objectives:  This study aimed to determinate the prevalence of micronutrients deficiencies and to compare the differences between the two subtypes of AN (restricting type (AN-R) and binge-eating/purging type (AN-BP)).</div><div></div><div></div><div>Immune support by micronutrients is historically based on vitamin C deficiency and supplementation in scurvy in early times. It has since been established that the complex, integrated immune system needs multiple specific micronutrients, including vitamins A, D, C, E, B6, and B12, folate, zinc, iron, copper, and selenium, which play vital, often synergistic roles at every stage of the immune response. Adequate amounts are essential to ensure the proper function of physical barriers and immune cells; however, daily micronutrient intakes necessary to support immune function may be higher than current recommended dietary allowances. Certain populations have inadequate dietary micronutrient intakes, and situations with increased requirements (e.g., infection, stress, and pollution) further decrease stores within the body. Several micronutrients may be deficient, and even marginal deficiency may impair immunity. Although contradictory data exist, available evidence indicates that supplementation with multiple micronutrients with immune-supporting roles may modulate immune function and reduce the risk of infection. Micronutrients with the strongest evidence for immune support are vitamins C and D and zinc. Better design of human clinical studies addressing dosage and combinations of micronutrients in different populations are required to substantiate the benefits of micronutrient supplementation against infection.</div><div></div><div></div><div></div><div></div><div></div><div></div><div>Basic components of the immune system, including key micronutrients that contribute to immune function. The schematic highlights the areas of immunity and the micronutrients that affect these functions that are covered in this review. Abbreviations: Ig, immunoglobulins; MHC, major histocompatibility complex.</div><div></div><div></div><div>Micronutrients have key roles at every stage of the immune response [2,7,8,9]. This schematic summarizes important components and processes that are involved in different aspects of the innate and adaptive immune responses. The circles highlight those micronutrients that are known to affect these responses. The significant overlap between micronutrients and processes indicates the importance of multiple micronutrients in supporting proper function of the immune system. Abbreviations: APCs, antigen-presenting cells; C3, complement component 3; CRP, C-reactive protein; Cu, copper; Fe, iron; IFNs, interferons; Igs, immunoglobulins; ILs, interleukins; GI, gastrointestinal; GM-CSF, granulocyte-macrophage colony stimulating factor; MAC, membrane attack complex; MCP-1, monocyte chemoattractant protein-1; Mg, magnesium; MHCs, major histocompatibility complexes; NK, natural killer; NO, nitric oxide; ROS, reactive oxygen species; Se, selenium; TLRs, toll-like receptors; TNF, tumor-necrosis factors; Zn, zinc.</div><div></div><div></div><div>The question remains whether there any clinical benefits to supplementation with vitamins and/or minerals, either singly or in the form of an MMN supplement. For example, does micronutrient supplementation have any effect on reducing the risk or in the management of acute infections? Benefits have been reported in individual studies, which suggest that micronutrients may have the potential to restore resistance to certain types of infections (for examples, see [149,181,182,183,184,185,186,187,188]).</div><div></div><div></div><div>Thus, further research in standardized, better-characterized clinical trials is urgently required to further investigate the possible effects of supplementation on the risk of infection and its management in different types of populations, considering their micronutrient status. For example, micronutrients have multiple roles throughout the immune response, yet dietary intakes are often inadequate. Is supplementation beneficial in people with marginal, possible multiple micronutrient deficiencies (as opposed to those with more severe deficiencies)? What is the daily intake of micronutrient(s) required to optimize immune function and confer better protection against infection (as has already been determined for vitamins C and D)? Will supplementing with doses higher than the RDA provide greater benefits? Will an MMN supplement containing micronutrients with demonstrable immune-supporting effects have clinical benefits, and can these be replicated in different populations? What is the role of immune-supportive substances such as phytochemicals? The development of biomarker approaches to further capture the broad-spectrum and complexity of the immune response such as metabolomics, as well as non-invasive assessment of immune function and nutrient status, would help to better understand the role of micronutrients on the immune function.</div><div></div><div></div><div>Considering that many people have suboptimal levels of not just one but several micronutrients [113,114], and that immune defenses require a number of micronutrients for optimal functioning, the role of MMN supplementation in treating and reducing the risk of infections needs to be elucidated in randomized controlled trials. In an early study [177], the effects of long-term supplementation with trace elements (zinc 20 mg, selenium 100 μg) with or without antioxidant vitamins (beta carotene 6 mg, vitamin C 120 mg, and vitamin E (alpha-tocopherol) 15 mg) were assessed in institutionalized healthy older people. Supplementation with trace elements, with or without the antioxidant vitamins, increased antibody titers after the influenza vaccine. A trend for a reduced risk of respiratory tract infections was also observed, but only for supplementation with trace elements. An interventional pilot study that is currently underway is evaluating a daily MMN supplement (containing high-dose vitamin C (1000 mg), as well as vitamins D (10 μg), E (45 mg), A (700 μg), B6 (6.5 mg), B12 (9.6 μg), folate (400 μg), copper (0.9 mg), iron (5 mg), selenium (110 μg), and zinc (10 mg)) in older adults with no deficiencies in vitamins C and D or zinc [227]. In addition to its effects on micronutrient status, immune parameters (e.g., phagocytic activity, ROS generation by neutrophils, and levels of inflammatory cytokines), and quality of life, it is also assessing the effects on self-reported length and severity of illness. Results to date indicate that after 12 weeks of supplementation, the MMN supplement is well tolerated, significantly increases levels of vitamin C and zinc and the production of ROS by neutrophils. Importantly, it significantly decreases the length and severity of self-reported illness. Such studies are important to contribute to and improve the current knowledge base.</div><div></div><div></div><div>Clearly, micronutrients are an integral part of the immune system, and the body needs optimal levels for effective immune function. It is well established that overt micronutrient deficiencies can adversely affect the immune system and predispose individuals to infections. It is likely that marginal deficiencies are also associated with increased risk of infections, although the effect may be less pronounced than those observed with overt deficiencies. The dietary intake of various micronutrients is inadequate worldwide, including industrialized countries, which can increase the risk of infection. In addition, mounting evidence suggests that increased intake of some micronutrients above the RDA may help optimize or maximize immune function and thus improve resistance to infection. Thus, a gap exists between dietary intakes and levels for optimal immune function, providing a rationale to supplement the diet with micronutrients to help support the immune system and reduce the risk of infection.</div><div></div><div> dca57bae1f</div>