Estudo revela que mudanças no corpo começam após três dias de jejum

Um jejum de sete dias apenas com água desencadeia grandes alterações moleculares em todo o corpo, com os efeitos mais significativos surgindo apenas após três dias sem comida. Pesquisadores acompanharam mudanças nas proteínas de voluntários saudáveis para mapear essas respostas em detalhes. As descobertas destacam tanto os potenciais benefícios quanto os riscos do jejum prolongado.

Pesquisadores da Queen Mary University of London e da Norwegian School of Sports Sciences monitoraram 12 voluntários saudáveis durante um jejum de sete dias. Eles coletaram amostras de sangue diariamente e analisaram cerca de 3.000 proteínas para observar as mudanças internas. O corpo passou a usar gordura em vez de glicose nos primeiros dois a três dias, resultando em uma perda de peso média de 5,7 quilogramas. A maior parte da perda de tecido magro foi recuperada após a retomada da alimentação, enquanto a perda de gordura permaneceu em grande parte.

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