<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-0011</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina]]></journal-title>
<abbrev-journal-title><![CDATA[rev.fac.med.]]></abbrev-journal-title>
<issn>0120-0011</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-00112020000400617</article-id>
<article-id pub-id-type="doi">10.15446/revfacmed.v68n4.74346</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Asociación entre el sistema de recompensa del cerebro y elección de comida en adultos mayores y de mediana edad]]></article-title>
<article-title xml:lang="en"><![CDATA[Association between the reward system and food choice in middle-aged and older adults]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valladares]]></surname>
<given-names><![CDATA[Macarena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Obregón]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pino]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Bernardo O Higgins Facultad de Salud Departamento de Ciencias Químicas y Biológicas]]></institution>
<addr-line><![CDATA[Santiago de Chile ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad San Sebastián Facultad de Ciencias para el Cuidado de la Salud ]]></institution>
<addr-line><![CDATA[Concepción ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Bernardo O Higgins Facultad de Salud ]]></institution>
<addr-line><![CDATA[Santiago de Chile ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Bernardo O Higgins  ]]></institution>
<addr-line><![CDATA[Santiago de Chile ]]></addr-line>
<country>Chile</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>68</volume>
<numero>4</numero>
<fpage>617</fpage>
<lpage>624</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-00112020000400617&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-00112020000400617&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-00112020000400617&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. Todos los días las personas toman diferentes decisiones relacionadas con su elección de alimentos, lo que a su vez determina sus hábitos alimenticios. El sistema de recompensa del cerebro (SRC) permite asociar ciertas situaciones con una sensación de placer, lo que influye en la posterior elección de alimentos.  Objetivo. Describir cómo influye el SRC en el proceso de elección de comida en adultos de mediana edad y en adultos mayores autosuficientes.  Materiales y métodos. Se realizó una búsqueda de la literatura en PubMed y SciELO. Se buscaron artículos escritos en inglés y español y publicados entre 1996 y 2018 utilizando los siguientes términos (en ambos idiomas): "elección de la comida", "sistema de recompensa", "nutrición", "adulto", "adulto mayor", "estado nutricional" y "envejecimiento".  Resultados. 50 artículos cumplieron con los criterios de inclusión. Solo 1 estudio estaba escrito en español; 22 fueron realizados en adultos mayores y el resto en adultos entre 20 y 40 años.  Conclusiones. Teniendo en cuenta el escaso número de estudios sobre la conducta alimentaria en general, y en particular sobre la elección de comida en adultos mayores y de mediana edad, es necesario realizar más estudios en Latinoamérica sobre los procesos que subyacen al SRC y su relación con la elección de comida, y cómo estos cambian con la edad para predecir posibles conductas alimentarias e implementar intervenciones efectivas, pues una dieta saludable es esencial para un envejecimiento saludable.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Every day, people make different decisions regarding the food they choose, which in turn determine their eating habits. The reward system (RS) allows associating certain situations to pleasure, which influences subsequent food choices.  Objective: To describe how the RS influences the selection of foods in middle-aged and self-reliant older adults.  Materials and methods: A literature search was conducted in PubMed and SciELO. Articles written in English and Spanish and published between 1996 and 2018 were included in the search; the following search terms (in both languages) were used: "food choice", "reward system", "nutrition", "adult", "elderly", "nutritional status" and "aging".  Results: 50 articles met the inclusion criteria. Only 1 study was written in Spanish; 22 were conducted on older adults and the rest on adults between 20 and 40 years old.  Conclusions: Studies on eating behavior in general and on food choice in older and middle-aged adults in particular, are scarce. Therefore, further research in the Latin-America is needed to analyze the processes underlying the RS and its relationship to food choice, and how these processes change as people age in order to predict possible eating behaviors and implement effective interventions, since a healthy diet is essential for healthy aging.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Índice de masa corporal]]></kwd>
<kwd lng="es"><![CDATA[Dopamina]]></kwd>
<kwd lng="es"><![CDATA[Adulto]]></kwd>
<kwd lng="es"><![CDATA[Adulto Mayor (DeCS)]]></kwd>
<kwd lng="en"><![CDATA[Body mass index]]></kwd>
<kwd lng="en"><![CDATA[Dopamine]]></kwd>
<kwd lng="en"><![CDATA[Adult]]></kwd>
<kwd lng="en"><![CDATA[Elderly (MeSH)]]></kwd>
</kwd-group>
</article-meta>
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