A dieta cetogênica pode auxiliar no tratamento do câncer? Uma análise crítica
DOI:
https://doi.org/10.47320/rasbran.2020.1467Resumo
Existe um crescente interesse na eficácia terapêutica da dieta cetogênica, dada a hipótese de que a restrição de carboidratos (CHO) favoreceria uma menor atividade de células tumorais. Mesmo assim, tais dietas continuam sendo um tema controverso na área de oncologia. Assim, este trabalho tem como objetivo sumarizar os estudos que já investigaram os potenciais efeitos terapêuticos da dieta cetogênica no tratamento do Câncer em pacientes humanos. Foi realizada uma revisão narrativa da literatura, nas bases de dados Literatura Latino- Americana e do Caribe (LILACS), Scientific Electronic Library Online (SciELO), Sistema Online de Busca e Análise de Literatura Médica (MEDLINE) e base Centro Latino Americano e do Caribe de Informação em Ciências da Saúde (BIREME). As seguintes palavras-chaves foram utilizadas isoladamente ou em associação: câncer, nutrição, restrição de carboidrato, células cancerígenas, e dieta cetogênica. Artigos publicados entre 2010 e 2018 e nos idiomas Inglês e Português foram selecionados. Nenhum estudo clínico randomizado foi encontrado. Ao longo dos estudos revisados, os quais se incluíam em sua maioria desenhos quasiexperimentais e estudos de caso, 221 pacientes foram selecionados. Resultados mistos foram observados, tanto apoiando quanto refutando a eficácia terapêutica da dieta cetogênica no tratamento de pacientes com câncer. Importantemente, apenas 92 (42%) desses pacientes foram submetidos à dieta cetogênica, dos quais somente 41% tiveram boa aderência à dieta. Estudos clínicos randomizados, investigando grandes segmentos de pacientes por longos períodos, com metodologias e protocolos dietéticos comparáveis, ainda são necessários antes que tal dieta possa ser recomendada como tratamento complementar do Câncer.
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