Vício em Comida e Comer em Excesso: O Cérebro, o Corpo e o Ambiente Alimentar
Comer em excesso é compreendido cada vez mais não como uma falha de força de vontade, mas como o resultado previsível de mecanismos neurológicos de recompensa, produtos alimentares industrialmente elaborados e sinais de fome mal interpretados. Compreender esses fatores sobrepostos oferece uma estrutura mais coerente para explicar por que tantas pessoas têm dificuldade em comer menos, mesmo quando querem.
Criado com IAA questão de por que as pessoas consistentemente comem mais do que seus corpos precisam foi muito além de explicações simples envolvendo autocontrole. Perspectivas convergentes da psicologia clínica, da ciência da nutrição e da medicina metabólica apontam para um conjunto de mecanismos biológicos e ambientais que ativamente trabalham contra a contenção. Para muitas pessoas, a experiência de comer em excesso não é uma falha de caráter, mas uma resposta previsível a um suprimento alimentar e a um sistema neurológico que nunca foram projetados para interagir da forma como interagem hoje.
Criado com IAA Conexão com a Dopamina: Como os Alimentos Processados Sequestram o Sistema de Recompensa
No núcleo neurológico do vício em comida está a dopamina, a principal molécula de sinalização de recompensa do cérebro. De acordo com o Dr. Joel Fuhrman, óleos refinados e farinha branca desencadeiam respostas de dopamina no cérebro que se assemelham às produzidas por substâncias viciantes. O mecanismo está parcialmente relacionado à velocidade: a farinha branca, ele explica, entra na corrente sanguínea tão rapidamente quanto o açúcar de mesa, produzindo um pico calórico acentuado. Os óleos refinados agravam isso ao fornecer uma carga calórica extraordinariamente densa sem nenhuma fibra, vitamina ou mineral que acompanhe para retardar a absorção ou sinalizar saciedade.
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