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Black JA, Park M et al. Br J Gen Pract 2015; 10.3399/bjgp15X684385

And, it was more likely that parents did not recognise their child was overweight if they are 'black or South Asian, male, more deprived, or the child was older.' A child is categorised as obese if their BMI is greater than or equal to the 95th centile (healthy weight 2nd–85th centile). This cross-sectional study recruited 4–5- and 10–11-year-old-English children and their parents (n = 2,976 complete data sets). The BMI of each child was measured and the parents were invited to answer a questionnaire asking their perceived view of their child's weight. It was conceded that the low response rate of only 15% could lead to non-response bias. These investigators conclude that as parents did not recognise that their child is overweight, they cannot possibly adopt strategies to address calorific imbalance. A population approach to tackle childhood obesity, would be to impose a sugar tax. But then it is argued 'a sugar tax is simply a tax on the poor'.