"Simplistic notions based on 'energy in and energy out' have proven largely ineffective both when dealing with individuals and with populations. This might be owing to the fact that current interventions do not take into account the complex biopsychological responses to defend body weight or the notion that only overconsumption of food and physical inactivity are the root causes of obesity."
Jean-Philippe Chaput, 2014
https://pmc.ncbi.nlm.nih.gov/articles/PMC4229150/
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