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The Smarter Lunchrooms intervention approach aims to tackle childhood obesity by promoting healthier nutrition through the use of choice architecture or ‘nudge’ tactics in school lunchrooms. I reviewed research papers that were described by Cornell University as forming the evidence base for the Smarter Lunchrooms approach. Here I discuss concerns about the way that research informing the Smarter Lunchrooms approach has been conducted and disseminated. The widespread implementation of the Smarter Lunchrooms approach is discussed and the likely efficacy of this public health intervention is also considered.